CN115058923B - Base paper for firework tube and manufacturing method - Google Patents

Base paper for firework tube and manufacturing method Download PDF

Info

Publication number
CN115058923B
CN115058923B CN202210788356.0A CN202210788356A CN115058923B CN 115058923 B CN115058923 B CN 115058923B CN 202210788356 A CN202210788356 A CN 202210788356A CN 115058923 B CN115058923 B CN 115058923B
Authority
CN
China
Prior art keywords
paper
pulp
pulping
agent
equal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210788356.0A
Other languages
Chinese (zh)
Other versions
CN115058923A (en
Inventor
何江林
朱宏伟
史梦华
阳路
赵国红
董超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yueyang Paper Co ltd
Original Assignee
Yueyang Paper Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yueyang Paper Co ltd filed Critical Yueyang Paper Co ltd
Priority to CN202210788356.0A priority Critical patent/CN115058923B/en
Publication of CN115058923A publication Critical patent/CN115058923A/en
Application granted granted Critical
Publication of CN115058923B publication Critical patent/CN115058923B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D21H27/18—Paper- or board-based structures for surface covering
    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • 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
    • 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
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • 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

Abstract

The application provides base paper for a firework tube and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: pulping, pulp mixing, seasoning, pulp flushing, screening and purifying, sizing, net part dehydration molding, squeezing, pre-drying, surface spraying and post-drying the fiber raw materials to obtain base paper for the firework tube; the fiber raw materials comprise the following components in percentage by weight: 40-45% of unbleached sulfate chemical wood pulp, 40-45% of waste kraft cement bags and 15-20% of natural color chemical mechanical pulp; the pulping raw materials are unbleached sulfate chemical wood pulp and a waste cowhide cement bag, the total concentration is 8-10wt%, and a fiber wetting agent is added according to 1.0-2.0 kg/t to assist pulping, and the beating degree is controlled to be 22-28 DEG SR; in the sizing process, a dry strength agent is added according to the amount of 10-15 kg/t paper, so that the longitudinal tensile strength is more than or equal to 3.6kN/m. The quality of the paper product meets the quality standard requirement, and the tightness is moderate, so that the paper product is beneficial to subsequent processing and application.

Description

Base paper for firework tube and manufacturing method
Technical Field
The application relates to the technical field of papermaking, in particular to base paper for a firework tube and a manufacturing method thereof, which are mainly used for processing the firework tube.
Background
China is the world's largest production, export and consumption country of fireworks and crackers, and the yield of fireworks and crackers accounts for 80% of the global yield. The provinces of Liuyang, sweet basil, and Duanling in Hunan province, and Duanpi, duanxiang, shangpi, guangxi North sea, etc. are the main production areas in China, wherein Liuyang, sweet basil, shangpi, and Duanpi are the most concentrated areas of the firework and firecracker industry. The fireworks are folk culture, the population of China is numerous, the fireworks culture is thick, from the viewpoint of domestic consumer market, china has a long-term firework and firecracker firing custom, the national economy continues to develop well, activities such as various domestic events, celebrations and the like are continuously increased, and huge firework and firecracker consumer groups and consumer markets in China are inoculated; the export amount of fireworks and crackers is about 10 hundred million dollars in year 2020 and 1-5 months, the annual output value is increased by 0.3% in year, and the annual output value is increased by 12.1%.
Paper is an important constituent material of fireworks and crackers, paper and paper tubes are main carriers of the fireworks and crackers, and a huge fireworks and crackers market brings wide market prospect for professional fireworks and crackers packaging paper. The production process flow of the base paper for the firework and firecracker tubes is basically consistent with that of other paper products: namely natural cellulose (wood and non-wood fiber raw materials), pulping (chemical pulping method, chemical mechanical pulping and mechanical pulping), pulping, desanding, purifying, pulp flushing, net forming, squeezing, drying, coiling, rewinding and cutting, packaging and warehousing. Along with the enhancement of environmental awareness and the improvement of concept level, the requirements on fireworks and crackers are higher and higher, and the product transformation and upgrading promote the development of novel paper for fireworks and crackers. The domestic fireworks and crackers are disordered in species, and along with the improvement of production technology, the pursuit of the quality of fireworks and crackers by people and the requirements of safety during processing and setting off of fireworks, the paper quality is also required to be higher.
Disclosure of Invention
In view of the above, the application aims to provide the base paper for the firework tube and the manufacturing method thereof, the production process of the base paper accords with the process requirements of green and environment-friendly paper products, the quality of the paper products accords with the quality standard requirements, and the tightness is moderate, so that the base paper is beneficial to subsequent processing and application.
The application provides a manufacturing method of base paper for a firework tube, which comprises the following steps:
pulping, pulp mixing, seasoning, pulp flushing, screening and purifying, sizing, net part dehydration molding, squeezing, pre-drying, surface spraying and post-drying the fiber raw materials to obtain base paper for the firework tube;
the fiber raw materials comprise the following components in percentage by weight: 40-45% of unbleached sulfate chemical wood pulp, 40-45% of waste kraft cement bag pulp and 15-20% of natural color chemical mechanical pulp;
the pulping raw materials are unbleached sulfate chemical wood pulp and waste kraft cement bag pulp, the total concentration is 8-10wt%, and a fiber wetting agent is added according to 1.0-2.0 kg/t to assist pulping, and the pulping degree is controlled to be 22-28 DEG SR; in the sizing process, a dry strength agent is added according to the amount of 10-15 kg/t paper, so that the longitudinal tensile strength is more than or equal to 3.6kN/m.
Preferably, disc grinding is adopted for beating, and fin-shaped tooth-shaped teeth are adopted for grinding sheets of beating equipment.
Preferably, in the pulp mixing process, natural color chemimechanical pulp is added into the pulped material in proportion to be adjusted into pulp with the concentration of 3.5-4.0 percent, and neutral sizing agent is added according to the concentration of 10.0-15.0 kg/t paper.
Preferably, the sizing process is also added with an anti-slip agent, and the dosage is 1.5-2.5 kg/t of paper.
Preferably, the sizing process is also added with antiseptic and bactericide, and the dosage is 0.5-0.8 kg/t paper.
Preferably, the surface spraying process further comprises spraying a water repellent agent to the paper surface, wherein the dosage of the water repellent agent is 5-8 kg/t of paper.
Preferably, the surface spraying process further comprises spraying a flame retardant to the paper surface in an amount of 10-15 kg/t of paper.
Preferably, the technological parameters of the dehydration molding of the mesh part include: the net-surfing concentration is 0.25-0.30%, the net-surfing PH value is 6.5-7.5, and the pulp-wire speed ratio is 1.10-1.19.
The application provides a base paper for a firework tube, which is prepared by the manufacturing method, and the product ration is 55-60 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The tightness is less than or equal to 0.65g/cm 3 The burst index is more than or equal to 3.2kPa.m 2 /g。
Preferably, the base paper for a firework tube satisfies at least one of the following product parameters:
bulk of 1.40.+ -. 0.05cm 3 Per gram, smoothness less than or equal to 8s, longitudinal/transverse tensile strength more than or equal to 3.6/1.7kN/m, cobb value less than or equal to 25g/m 2 Lateral expansion rateLess than or equal to 3.0 percent, and the whiteness of the ISO is 20 to 22 percent.
According to the market development demand, in order to develop high-quality firework paper meeting consumer demand, the application selects the firework tube paper (base paper for firework tube) with large market demand as a research and development target. During production, the present application first screens raw material and auxiliary material and chemical, uses natural color sulfate wood pulp, waste water and mud bag paper recovered pulp and natural color machine pulp as fiber raw material, and prepares the material in a certain proportion, and develops and obtains high-grade paper products for firework package through controlling the technological aspects of pulping, surfing the net, etc. For the fiber raw material, the recycled fiber and the high-yield natural color machine pulp are fully utilized, and the prepared firework tube paper has the characteristics of good quality, environmental protection and resource saving. Wherein, the paper product of the application has good uniformity and uniform fiber distribution; has good tightness, tensile strength and the like. The application fully excavates and utilizes the recovered high-quality fiber raw material and low-energy-consumption natural-color machine pulp to produce the firework tube paper, has wide raw material source and lower production cost, and better meets the quality technical requirements of the firework tube paper in product quality.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides a manufacturing method of base paper for a firework tube, which comprises the following process flows:
pulping, pulp mixing, seasoning, pulp flushing, screening and purifying, sizing, net part dehydration molding, squeezing, pre-drying, surface spraying and post-drying the fiber raw materials to obtain base paper for the firework tube; wherein, the fiber raw materials comprise the following components in percentage by weight: 40-45% of unbleached sulfate chemical wood pulp, 40-45% of waste kraft cement bag pulp and 15-20% of natural color chemical mechanical pulp;
the pulping raw materials are unbleached sulfate chemical wood pulp and waste kraft cement bag pulp, the total concentration is 8-10wt%, and a fiber wetting agent is added according to 1.0-2.0 kg/t to assist pulping, and the pulping degree is controlled to be 22-28 DEG SR; in the sizing process, a dry strength agent is added according to the amount of 10-15 kg/t paper, so that the longitudinal tensile strength is more than or equal to 3.6kN/m.
In order to meet the above requirements, the following technical scheme is adopted in the embodiment of the application: pulping, desanding and degassing, sizing, fine screening, net forming, squeezing, pre-drying, spraying, post-drying, coiling, rewinding and packaging to form firework tube paper; the scheme uses 40-45% of unbleached sulfate chemical wood pulp, 40-45% of waste kraft cement bag pulp and 15-20% of natural color machine pulp as fiber raw materials for papermaking production.
In the application, the waste cement bag paper is a high-strength paper product, and is recycled after cement packaging and used for producing the firework tube packaging paper. The method is characterized in that the waste paper has good strength and contains more cement, the waste paper needs to be treated by beating through a vibrating screen to remove ash, disintegrate and purify settled sand, and then a grinding sheet with a wire dividing broom as a main function is selected for pulping; the treatment difficulty of waste paper pulp is how to maintain the length and strength of the fiber, and the cement ash is removed to ensure the cleanliness of the pulp. The regenerated fiber slurry is prepared by taking recycled paper or paperboard as a raw material and carrying out pulping, filtering and purifying treatment, wherein the fiber has short length, low strength and weak toughness compared with the original wood pulp; the waste paper fiber is added according to a certain proportion, and is mainly used for improving uniformity and tightness of firework tube paper, saving fiber resources, reducing carbon emission and other indexes.
Specifically, the recycled wastewater mud bag paper can be screened to remove mud, sand and sundries by a vibrating screen, and then crushed by a hydraulic pulper, wherein the crushed pulp concentration of the hydraulic pulper is 8-10wt%. The cement bag paper in the application is subjected to ash removal by adopting a vibrating screen (120-150 hops per minute), and is subjected to high-concentration (10-15%) pulping by adopting a serrated high-concentration vertical hydraulic pulping machine, and the pulping machine has high efficiency and low energy consumption.
According to the use characteristics of the product and under the condition of ensuring the physical strength, the embodiment of the application fully excavates and recycles fiber resources and high-yield slurry (adopts commercial or self-production) so as to save wood resources and energy consumption. The weight ratio of the various fiber raw materials in the embodiment of the application is as follows: self-produced unbleached sulfate chemical wood pulp 40-45%: 40-45% of waste cowhide cement bag paper pulp: 15-20% of natural color sizing agent. Wherein, if the proportion of the waste cowhide cement bag pulp is too high, the subsequent paper strength assurance and the like are not facilitated.
In order to improve beating quality, the embodiment of the application adopts a medium-consistency beating mode of a medium-consistency pulping machine, crushed recovered paper pulp and self-produced sulfate wood pulp are fully mixed in proportion in a pre-beating pool to form pulp with uniform concentration of 8-10%, the pulp is conveyed to disc grinding equipment for beating through a pre-beating medium pump, a fiber wetting agent is added in the pre-beating pool according to the proportion of 1.0-2.0 kg/t for assisting beating, and the mixed paper pulp is beaten to post-beating pulp with the thickness of 22-28 DEG SR.
In the examples of the present application, key indicators of unbleached sulfate chemical wood pulp: whiteness 21+/-1% ISO, fiber length not less than 1.8 μm, fiber width not less than 28 μm, beating degree 13-15 DEG SR, wet weight 13-18 g, concentration 3.5-5.0% and residual alkali content not more than 400ppm. In order to further improve the softness of the fibers and reduce cutting, the grinding disc of the medium consistency pulping machine adopts comb-teeth-shaped fish fins so as to facilitate the fluffing of the pulp; meanwhile, the fiber wetting agent is added into the tank before beating according to the weight of 1.0-2.0 kg/t to assist beating, so that the effects of improving quality and reducing consumption are achieved. To further ensure the strength of the finished paper to the quality requirement, a fiber wetting agent is added into a tank for auxiliary pulping at the speed of 1.0-2.0 kg/t before beating, so that the fiber multi-filament brooming is promoted, the cutting is reduced, the uniformity is improved, the paper strength is improved, and the energy-saving effect of 15-20% is achieved.
The embodiment of the application can adopt biological enzyme type fiber penetration agent; the pulping process comprises the following steps: the total concentration of the slurry is 8-10%, and the beating degree is controlled to be 25+/-2 DEG SR. Specifically, the fiber penetration agent is a biological enzyme, the pH value is 5.0-8.0, and the density is 1.00-1.15 g/m 3 The appearance is light yellow semitransparent liquid; the embodiment of the application adopts a fiber penetrating agent (or fiber swelling agent) with the model of lRA-6015 produced by a company, and RA-6015 is specially suitable for unbleached softwood pulp, and the pulp can be processed by a pulping machine by selectively processing the surface of unbleached wood pulp fiberSoftening, thereby reducing refining energy consumption while avoiding or reducing excessive fibrillation outside of the bulk of the fines or fiber cells resulting from severing the fibers without any negative impact on the tear and fold resistance of the slurry. The fiber penetration agent is mainly characterized in that: improve the flexibility of the slurry, improve the throughput of the slurry in the process of grinding, and save the energy consumption of grinding. The embodiment of the application takes the above-mentioned slurry after beating to mix in the slurry mixing pool, mix into the true color machine slurry according to the proportion, mix and mix into 3.5-4wt% of slurry; and adding neutral sizing agent at the outlet of the mixed pulp pump according to the weight of 10.0-15.0 kg/t paper to promote sizing to be less than or equal to 25g/m 2 。
In the embodiment of the application, the raw material of the natural-color machine pulp adopts camphor wood chips after camphor wood oil is extracted, the whiteness of the pulp is 33+/-2% ISO, the beating degree is 38-43 DEG SR, the concentration is 3.5-5.0%, the fracture length is more than or equal to 2km, the dust is less than or equal to 1200mg/l, and the pH value is 7.0-8.0; the conditions of such slurries are suitable for neutral sizing with AKD. The pH value of the firework tube paper system produced by the natural color needle pulp, the waste paper pulp and the natural color machine pulp is 7.0-8.5, and the firework tube paper system is suitable for sizing by using AKD; AKD, alkyl ketene dimer, is a kind of neutral alkali sizing, it has active group which reacts with hydroxyl in the fiber directly, can react with hydroxyl in the fiber under the neutral alkali condition, can make the paper form good hydrophobicity, ink-repellent property. For example, neutral size model YZ-2022 may be used.
The embodiment of the application removes sand, removes gas and purifies the prepared slurry, then dilutes the slurry into slurry with certain concentration, and introduces the slurry into a headbox of papermaking system equipment for surfing; the above-mentioned wire-feeding is also called sizing, etc., and the pulp is dewatered and formed in the wire section of the paper making system. In order to further improve the burst index and the tensile strength of the finished paper mixed with the natural-color machine pulp and the recovered pulp, the embodiment of the application adds a dry (reinforcing) agent according to the amount of 10-15 kg/t paper at the inlet of a pressure screen of a sizing system to ensure that the burst index is more than or equal to 3.2kPa.m 2 And/g, and the longitudinal tensile strength is more than or equal to 3.6kN/m.
The dry strength agent, namely the paper dry strength increasing agent, is preferably a synthetic modified amphoteric polyacrylamide resin, can effectively improve the performances of paper such as tensile force, stiffness, fracture length, folding endurance and the like, and can improve the dry strength of paper products by 20-25% and the folding endurance by 15-20% for producing high-quality paper by using regenerated fibers, and other physical indexes are obviously improved. Specifically, the dry enhancer model may be WS-1255; the appearance of the dry strength agent: colorless transparent viscous liquid, mass solids content (%): 12.5+/-0.5-20; viscosity, mPas (25 ℃ C.). 1500-6000; pH value: 4-6; ionic: and (3) a cation type.
In addition, in order to further improve the paper forming roughness and make the paper forming smoothness less than or equal to 8s, the application preferably uses the anti-slip agent according to the weight of 1.5-2.5 kg/t paper at the inlet of a sizing system pressure screen. The slip-resistant agent is preferably added in the sizing process, and the dosage is 1.5-2.5 kg/t of paper. Action of adding anti-slip agent: mainly because the firework tube paper is prevented from being scattered and coiled due to too smooth paper surface in the tube manufacturing process, and the processing efficiency and quality are affected. The principle of the anti-slip agent is that the anti-slip agent is added into the slurry and reacts with the surface of the fiber after being coated to form capillary holes which cannot be seen by human eyes, so that the friction force of paper is increased to play a role in anti-slip effect, and the anti-slip effect is better when water and sizing materials are encountered.
In view of using 40-45% of waste paper recycling pulp, in order to ensure normal production and reduce the influence of mould on peculiar smell, the application preferably adds antiseptic and bactericide according to 0.5-0.8 kg/t paper in an off-machine white water tank; the sizing process is preferably added with antiseptic bactericide, because regenerated fiber is adopted to prepare high-grade firework tube paper, and broad-spectrum antiseptic bactericide is added to prevent microorganisms and bacterial reproduction and growth in the system from negatively affecting the production and the product quality.
The main components of the antiseptic bactericide adopted in the embodiment of the application are isothiazolinone compounds with chemical names: 2-methyl-4-isothiazolin-3-one (B); the method has no corrosion to equipment and damage to pulp fibers caused by the oxidation type bactericide, does not have negative influence on the papermaking process, and can effectively improve the cleanliness of the paper machine. Specific product characteristics include: the effective content is more than or equal to 14 percent; solubility, namely, completely mixing with water; the density is more than or equal to 1.30g/cm 3 (20 ℃ C.); PH is 2.0-4.0; appearance: pale yellow transparent body.
In the embodiment of the application, the prepared paper pulp is made into wet paper, and the technological parameters of the dehydration molding of the wire part comprise: the net-surfing concentration is 0.25-0.30%, the net-surfing PH value is 6.5-7.5, and the pulp-wire speed ratio is 1.10-1.19. In order to ensure the uniformity of the finished paper and to increase the bulk, the present application preferably employs the following papermaking parameters:
the net surfing concentration is as follows: 0.25 to 0.30 percent of the pH value of the internet: 6.5-7.5, pulp-to-wire ratio: 1.10 to 1.19, 18 to 20mm lip opening, 400+/-20 kPa of primary pressure, 440+/-20 kPa of secondary pressure and 400+/-20 kPa of tertiary pressure, and no calendaring is used.
In an embodiment of the application, the wet paper web after the web is formed is dried before being dried after being fed, and the prepared liquid medicine is sprayed on the paper surface by using spraying equipment, wherein the liquid medicine can independently comprise a water repellent agent and a flame retardant agent. According to the application, the diluted and mixed water-repellent agent and flame retardant liquid medicine are sprayed on paper surface by adopting spraying equipment in the middle of the front drying and the rear drying, the dosage of the water-repellent agent is preferably 5-8 kg/t paper, the dosage of the flame retardant is preferably 10-15 kg/t paper, the spraying pressure can be 0.5MPa, and the moistureproof and flame retardant effects of the firework tube paper are further ensured.
The water repellent agent adopted in the embodiment of the application is a water repellent agent containing wax components and has resistance to permeation of liquid such as water, latex, oil and the like; is water-soluble environment-friendly nonionic, and has acid resistance, alkali resistance, hard water resistance, strong water solubility and stable emulsion. The water repellent agent can be diluted with water in any proportion, does not delaminate, does not break emulsion, does not agglomerate, and has long shelf life, high solid content and good dispersibility. The water repellent agent is applied to the production of firework tube paper, and can improve the efficacy of the paper in the aspects of water resistance, flexibility and the like.
Specifically, the water repellent agent is a novel surface-coating JH-43 water repellent agent. The main technical indexes of the water repellent agent comprise: an off-white homogeneous semitransparent liquid; 30% of solid content; the PH value is 7-9; particle size about 0.065 microns; melting point of about 56-62 ℃; ionic type, aqueous nonionic type.
The function of adding the flame retardant is to endow the paper with flame retardancy, and aiming at the characteristics of the application, the phosphorus-nitrogen flame retardant is adopted, and the phosphorus-nitrogen flame retardant (P-N) achieves the aim of flame retardance mainly through the synergistic effect of phosphorus and nitrogen, and has the advantages of no toxicity, no harm, no smoke and no halogen, and has good flame retardance.
The adding mode is determined according to the using characteristics of the firework tube paper and the requirements of the product quality and by combining the characteristics of the water repellent agent and the flame retardant, if the firework tube paper is added in the slurry, the water repellent agent and the flame retardant are used in large amounts and are easy to dissolve in water, and a large part of the firework tube paper is lost after sand removal, so that the water-resistant flame-retardant effect of the paper surface is affected; the water-resistant flame retardant liquid medicine is uniformly sprayed on the paper surface by adopting a spraying technology, so that a good water-resistant flame retardant effect can be generated, and meanwhile, the production cost can be effectively saved.
And drying the paper web with the sprayed surface, obtaining dry firework tube paper, and finally coiling, rewinding and packaging.
The application provides a base paper for a firework tube, which is prepared by the manufacturing method, and the ration of the product is 55-60 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The tightness is less than or equal to 0.65g/cm 3 The burst index is more than or equal to 3.2kPa.m 2 And/g. Wherein the tightness of the paper product is specifically 0.55-0.65 g/cm 3 If the tightness is too high, the firework tube is easy to scatter when being manufactured.
Preferably, the base paper for the firework tube satisfies at least one of the following product parameters:
bulk of 1.40.+ -. 0.05cm 3 Per gram, smoothness less than or equal to 8s, longitudinal/transverse tensile strength more than or equal to 3.6/1.7kN/m, cobb value less than or equal to 25g/m 2 The transverse expansion rate is less than or equal to 3.0 percent, and the ISO whiteness is 20 to 22 percent. Cobb value is a term of art for sizing, i.e., absorbency, in g/m 2 。
The paper for the firework tube manufactured by the embodiment of the application has good uniformity, small banner quantitative difference and consistent tightness, and has good tensile strength (the longitudinal direction is more than or equal to 3.6kN/m and the transverse direction is more than or equal to 1.8 kN/m) and flexibility, so that the firework tube is ensured to be cracked or broken when being mechanically folded and bent. And the bulk of the finished paper is good (1.40+/-0.05 cm) 3 And (g) the paper surface is rough (smoothness is less than or equal to 8 s), so that the phenomenon that the mechanical grabbing is not firm and the paper surface slides off during processing is avoided; the waterproof and dampproof functions are good; the product has good dimensional stability and small deformation, and does not influence the slitting effect of the base paper; at the same timeThe paper surface has smooth and clean appearance, no holes and other paper diseases.
Therefore, the product of the firework tube paper prepared by the embodiment of the application not only accords with GB/T22928-2008 quality standard of firework and firecracker packaging paper, but also has better quality and lower cost. The application develops the product, which has important significance for improving the profit level of enterprises and promoting the transformation and upgrading of the paper for fireworks and crackers. The application relates to a product implemented in the field of fireworks and crackers, and the quality standard of the product meets the standard requirement of the field and is higher than national standard, but the product is not limited to the numerical value in the standard range. The base paper quality index detection method is a unified standard in the papermaking field, and only carries out detection of related items according to the quality characteristics of each paper type.
In order to better understand the technical content of the present application, the following provides specific examples to further illustrate the present application. Wherein, the weight ratio is not specified. In addition, the examples of the present application use commercially available materials. Fiber penetration dosage form number RA6015; the dry reinforcing agent is colorless transparent viscous liquid, and the solid content (%): 12.5+/-0.5-20; viscosity, mPas (25 ℃ C.). 1500-6000; pH value: 4-6; ionic: and (3) a cation type. Anti-slip agent high molecular water-based polymer model SIS1652, antiseptic bactericide 2-methyl-4-isothiazolin-3-ketone (B), specific product characteristics: the effective content is more than or equal to 14 percent; solubility, namely, completely mixing with water; the density is more than or equal to 1.30g/cm 3 (20 ℃ C.); PH is 2.0-4.0; appearance: the light yellow transparent body, the neutral sizing agent alkyl ketene dimer, the water repellent agent is a novel surface-coated JH-43 water repellent agent (appearance: off-white homogeneous semitransparent liquid; solid content: 30%; pH value: 7-9; particle size: about 0.065 μm; melting point: about 56-62 ℃ C.; ionic: aqueous nonionic), flame retardant type P-N.
Example 1
In order to reduce pulping energy consumption and improve pulping quality, a liquid fiber swelling agent RA6015 provided by Guangdong Lishi industrial Co., ltd. Is used for a natural chemical pulp pulping pilot scale in a laboratory at a technical center. The specific contents are as follows:
1 brief description of fiber swelling agent
The fiber swelling agent RA6015 can make the pulp more flexible when being processed by a pulping machine through selectively processing the surface of unbleached wood pulp fiber, thereby reducing the pulping energy consumption, and simultaneously avoiding or reducing the cutting of the fiber to generate a large amount of fine fibers or excessive fine fibers outside fiber cells without negative influence on the tearing degree of the pulp.
2 protocol
And (3) fully soaking 50% softwood pulp (juntai) and 50% waste cement bag paper regenerated pulp according to the concentration of 4% and uniformly mixing, fluffing, accurately weighing a plurality of parts of pulp with 30g of absolute dry pulp, respectively adding 500g, 1000 g, 1500g and 2000g/t of pulp fiber swelling agent and uniformly mixing with the pulp, then treating in a constant-temperature water bath at 48 ℃ for 70min, finally pumping the treated pulp into a filter cake by using a Buchner funnel, pulping by using a PFI mill, and testing the freeness and fiber form of the pulp and sheet making after pulping by the PFI mill. The sheet was subjected to constant temperature and humidity equilibration to test the internal bond strength, fracture length, tear index, and burst index.
3 experimental results and analysis
TABLE 1 slurry performance (revolution 6500)
Table 2 sheet strength Property (revolution 6500)
From the experimental results, the fiber swelling agent RA6015 is used for mixing and pulping the natural-color needle wood and the regenerated pulp of the cement paper bag, and has a certain effect on reducing energy consumption. Under the experimental dosage, the tapping degree is improved by 1-3 degrees SR, and under the condition that the tapping degree is slightly improved, the internal bonding strength is in an ascending trend, and the tearing index is in a descending trend. In combination, when the dosage of the fiber swelling agent is 1000-1500g/t pulp, various strength performance indexes are ideal.
Conclusion 4
The fiber swelling agent RA6015 is used for pulping natural color chemical pulp, has a certain effect on reducing energy consumption, but has little effect, the beating degree is improved by 1-3SR, and when the pulp is used in an amount of 1000-1500g/t, each strength performance index is ideal.
Example 2
The papermaking process flow comprises the following steps: pulping, desanding and degassing, sizing, fine screening, net forming, squeezing, pre-drying, spraying, post-drying, coiling and rewinding, and packaging to obtain the firework tube paper. The method comprises the following steps:
and (3) screening the recycled wastewater mud bag paper by a vibrating screen to remove mud sand sundries, and then crushing by a hydraulic pulper, wherein the pulp crushing concentration of the hydraulic pulper is 8.50%.
Fully mixing crushed waste cement bag pulp with 40% of self-produced sulfate wood pulp according to the proportion of 45% to form 8.5% pulp in a pre-beating tank, conveying the pulp to a DD660 thick pulping machine for pulping by a pre-beating middle pump, adding fiber penetration agent according to the proportion of 2.0kg/t in the pre-beating tank for auxiliary pulping, beating the mixed pulp to 24 DEG SR post-beating pulp, and then adding 15% of natural pigment pulp in a pulp blending tank to prepare 3.5% pulp; diluting the prepared slurry into 0.3% slurry after purifying, feeding the slurry to a headbox for surfing, and respectively adding an anti-slip agent and a dry reinforcing agent at the inlet of a pressure screen of a sizing system, wherein the dosage of the anti-slip agent is 2.5kg/t of paper, and the dosage of the dry reinforcing agent is 12kg/t of paper; and (3) continuously adding antiseptic bactericide liquid into the white water tank outside the sizing system, wherein the bactericide dosage is 0.8kg/t paper.
Making the prepared paper pulp, wherein the net-surfing concentration is 0.30%, the net-surfing PH value is 7.5, and the pulp net speed ratio is as follows: 1.11, lip opening 18.0mm, first pressure 400kPa, second pressure 420kPa, positive pressure 380kPa; the wet paper web after net forming is dried before reaching 75% of dryness, the prepared 5% water-resistant flame-retardant liquor is sprayed to paper surface by spraying equipment before drying after entering, the water-resistant agent dosage is 5kg/t paper, the flame retardant dosage is 10kg/t paper, the spraying pressure is 0.5MPa, and the obtained paper web is dried after drying to obtain firework tube paper with the water content of 9.5%.
The manufactured firework tube paper has the product characteristics that: quantification of 60g/m 2 Paper ISO whiteness 21.5%, bulk 1.45cm 3 Per gram, tightness 0.62g/cm 3 Smoothness 6s, burst index 3.2kPa.m 2 /g, tensile strength (longitudinal/transverse): 3.7/1.8kN/m, cobb value 23g/m 2 The transverse expansion rate is 2.80%, the coiling water content of the finished paper is 9.0%, and the product quality meets the national quality standard of the paper for fireworks and crackers.
Example 3
The papermaking process flow comprises the following steps: pulping, desanding and degassing, sizing, fine screening, net forming, squeezing, pre-drying, spraying, post-drying, coiling and rewinding, and packaging to obtain the firework tube paper. The method comprises the following steps:
and (3) screening the recycled wastewater mud bag paper by a vibrating screen to remove mud sand sundries, and then crushing by a hydraulic pulper, wherein the crushed pulp concentration of the hydraulic pulper is 10%.
Fully mixing crushed waste cement bag pulp with 40% of self-produced sulfate wood pulp in a pre-beating pool according to a proportion of 40% to form 10% pulp, conveying the 10% pulp to a DD660 medium-concentration pulping machine for pulping by a pre-beating middle pump, adding a fiber wetting agent in the pre-beating pool according to a proportion of 2.0kg/t for auxiliary pulping, beating the mixed pulp to 25 DEG SR post-beating pulp, and then adding 20% of natural pigment pulp in a pulp preparing pool to prepare 3.8% finished pulp; diluting the prepared slurry into 0.3% slurry after purifying, feeding the slurry to a headbox for surfing, and respectively adding an anti-slip agent and a dry reinforcing agent at the inlet of a pressure screen of a sizing system, wherein the dosage of the anti-slip agent is 2.5kg/t of paper, and the dosage of the dry reinforcing agent is 12kg/t of paper; and (3) continuously adding antiseptic bactericide liquid into the white water tank outside the sizing system, wherein the bactericide dosage is 0.8kg/t paper.
Making the prepared paper pulp, wherein the net-surfing concentration is 0.30%, the net-surfing PH value is 7.5, and the pulp net speed ratio is as follows: 1.15, lip opening 18.0mm, first pressure 420kPa, second pressure 400kPa, positive pressure 380kPa; the wet paper web after net forming is dried before reaching 75% of dryness, the prepared 5.5% water-resistant flame-retardant liquor is sprayed to paper surface by spraying equipment before drying after entering, the water-resistant agent dosage is 6kg/t paper, the flame retardant dosage is 12kg/t paper, the spraying pressure is 0.5MPa, and the obtained paper web is dried after drying to obtain firework tube paper with the water content of 9.5%.
The manufactured firework tube paper has the product characteristics that: quantification of 55g/m 2 Paper ISO whiteness 22%, bulk 1.42cm 3 G/g, tightness0.65g/cm 3 Smoothness of 5.5s and burst index of 3.5kPa.m 2 /g, tensile strength (longitudinal/transverse): 3.7/1.7kN/m, cobb value 25g/m 2 The transverse expansion rate is 2.50%, the coiling moisture of the finished paper is 10%, and the product quality meets the national paper quality standard for fireworks and crackers. For examples 2-3, the range of raw material ratios exemplified is suitable for producing satisfactory products.
In summary, compared with the traditional products of the firework and firecracker packaging paper such as bobbin paper, corrugated paper, regenerated kraft paper and the like, the firework paper has higher safety in firework processing and setting off. Moreover, the production method meets the process requirements of green and environment-friendly paper products, has good product quality and low cost, and is suitable for popularization and application.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. The manufacturing method of the base paper for the firework tube is characterized by comprising the following steps of:
pulping, pulp mixing, seasoning, pulp flushing, screening and purifying, sizing, net part dehydration molding, squeezing, pre-drying, surface spraying and post-drying the fiber raw materials to obtain base paper for the firework tube;
the fiber raw materials comprise the following components in percentage by weight: 40-45% of unbleached sulfate chemical wood pulp, 40-45% of waste kraft cement bag pulp and 15-20% of natural color chemical mechanical pulp;
the pulping raw materials are unbleached sulfate chemical wood pulp and waste kraft cement bag pulp, the total concentration is 8-10wt%, and a fiber wetting agent is added according to 1.0-2.0 kg/t to assist pulping, and the pulping degree is controlled to be 22-28 DEG SR; in the sizing process, a dry strength agent is added according to the amount of 10-15 kg/t paper, so that the longitudinal tensile strength is more than or equal to 3.6kN/m.
2. The method according to claim 1, wherein the beating is performed by disc grinding, and the beating device is selected from the group consisting of fin-tooth type.
3. The method according to claim 1, wherein the natural color chemimechanical pulp is added to the pulped material in proportion to 3.5-4.0% pulp and the neutral sizing agent is added in 10.0-15.0 kg/t paper.
4. A method according to any one of claims 1-3, wherein an anti-slip agent is added during the sizing process in an amount of 1.5-2.5 kg/t paper.
5. A method according to any one of claims 1-3, wherein the sizing process is further supplemented with antiseptic and bactericidal agent in an amount of 0.5-0.8 kg/t paper.
6. A method of manufacture according to any one of claims 1 to 3 wherein the surface spraying process further comprises spraying a water repellent onto the paper surface in an amount of from 5 to 8kg/t of paper.
7. The method of claim 6, wherein the surface spraying further comprises spraying a flame retardant to the paper surface in an amount of 10 to 15kg/t of paper.
8. A method according to any one of claims 1-3, wherein the process parameters of the dewatering forming of the wire section include: the net-surfing concentration is 0.25-0.30%, the net-surfing PH value is 6.5-7.5, and the pulp-wire speed ratio is 1.10-1.19.
9. A base paper for a firework tube, produced by the production method of any one of claims 1 to 8, having a product basis weight of 55 to 60g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The tightness is less than or equal to 0.65g/cm 3 The burst index is more than or equal to 3.2kPa.m 2 /g。
10. A base paper for a firework tube according to claim 9, wherein the base paper for a firework tube satisfies at least one of the following product parameters:
bulk of 1.40.+ -. 0.05cm 3 Per gram, smoothness less than or equal to 8s, longitudinal/transverse tensile strength more than or equal to 3.6/1.7kN/m, cobb value less than or equal to 25g/m 2 The transverse expansion rate is less than or equal to 3.0 percent, and the ISO whiteness is 20 to 22 percent.
CN202210788356.0A 2022-07-06 2022-07-06 Base paper for firework tube and manufacturing method Active CN115058923B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210788356.0A CN115058923B (en) 2022-07-06 2022-07-06 Base paper for firework tube and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210788356.0A CN115058923B (en) 2022-07-06 2022-07-06 Base paper for firework tube and manufacturing method

Publications (2)

Publication Number Publication Date
CN115058923A CN115058923A (en) 2022-09-16
CN115058923B true CN115058923B (en) 2023-10-03

Family

ID=83204177

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210788356.0A Active CN115058923B (en) 2022-07-06 2022-07-06 Base paper for firework tube and manufacturing method

Country Status (1)

Country Link
CN (1) CN115058923B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008007910A (en) * 2006-06-30 2008-01-17 Daio Paper Corp Waste paper pulp-compounded craft paper
CN104018387A (en) * 2014-04-25 2014-09-03 江阴比图特种纸板有限公司 Manufacturing method of mould-proof packaging lining paperboard
CN105333773A (en) * 2015-10-14 2016-02-17 浏阳市华冠出口花炮有限公司 New material and method for manufacturing outer barrel of firework
CN110552245A (en) * 2019-08-12 2019-12-10 湖北金庄科技再生资源有限公司 Process for producing fine dried noodle bobbin base paper by using waste materials of paper mill
CN113529487A (en) * 2021-05-31 2021-10-22 联盛纸业（龙海）有限公司 High-gram-weight recycled craft paper and preparation method thereof
CN113584945A (en) * 2021-08-06 2021-11-02 岳阳林纸股份有限公司 Method for manufacturing impregnated insulating paper and impregnated insulating paper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008007910A (en) * 2006-06-30 2008-01-17 Daio Paper Corp Waste paper pulp-compounded craft paper
CN104018387A (en) * 2014-04-25 2014-09-03 江阴比图特种纸板有限公司 Manufacturing method of mould-proof packaging lining paperboard
CN105333773A (en) * 2015-10-14 2016-02-17 浏阳市华冠出口花炮有限公司 New material and method for manufacturing outer barrel of firework
CN110552245A (en) * 2019-08-12 2019-12-10 湖北金庄科技再生资源有限公司 Process for producing fine dried noodle bobbin base paper by using waste materials of paper mill
CN113529487A (en) * 2021-05-31 2021-10-22 联盛纸业（龙海）有限公司 High-gram-weight recycled craft paper and preparation method thereof
CN113584945A (en) * 2021-08-06 2021-11-02 岳阳林纸股份有限公司 Method for manufacturing impregnated insulating paper and impregnated insulating paper

Also Published As

Publication number Publication date
CN115058923A (en) 2022-09-16

Similar Documents

Publication Publication Date Title
US5567275A (en) Process for manufacturing paper from seaweed
JP6268385B2 (en) Waterproof recycled paper and production method thereof
RU2010100787A (en) METHOD FOR PRODUCING MODIFIED CELLULOSE FOR USE IN PAPER OR PAPER FABRIC, WHITE MODIFIED SULPHATE CELLULOSE, PAPER OR PAPERBOARD
CN109914143B (en) Bendable straw lining paper and preparation method thereof
CN102002892A (en) Production process of low-quantitative straw wrapping paper
CA2550261A1 (en) Filler for papermaking process
CN110373945A (en) A kind of ML kraft inner paper and its preparation process
CN104631196A (en) Single-layer superlow-gram-weight liner cardboard paper production method
CN109972454A (en) A kind of FB(is explosion-proof) paper tube base paper and its preparation process
CN110552249A (en) Production method for improving strength of full hemp cigarette paper
CN102154927B (en) Side offset paper and preparation method thereof
CN100365199C (en) Method for making pulp using cow dung as raw material
CN109736128A (en) A kind of manufacturing method of suction pipe body paper
CN112878089A (en) Preparation method of high-breaking-resistance kraft paper
CN104452467B (en) A kind of slim natural color food wrapper and preparation method thereof
CN115058923B (en) Base paper for firework tube and manufacturing method
CN109024054A (en) High-air-permeability filter stick shaping paper and its production method
CN110331614A (en) A kind of slurry being used to prepare suction pipe paper
CN104452465A (en) Unbleached tissue packing paper and production method thereof
CN102505572A (en) Method for producing noodle packing paper
CN107687112B (en) Method for manufacturing cardboard paper by using straws
CN114481659B (en) High-strength craft paper and production process thereof
FI80742C (en) SAETT FOER FRAMSTAELLNING AV PAPPER INNEHAOLLANDE LERA ELLER ANDRA FYLLMEDEL.
CN101760986B (en) Mixed pulp with high bulk, air permeability and tear index and cultural paper made thereof
CN101760989B (en) Mixed pulp with high opacity, air permeability and tearing index and cultural paper prepared from the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant