CN108505372A - 一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法 - Google Patents
一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法 Download PDFInfo
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- CN108505372A CN108505372A CN201810299551.0A CN201810299551A CN108505372A CN 108505372 A CN108505372 A CN 108505372A CN 201810299551 A CN201810299551 A CN 201810299551A CN 108505372 A CN108505372 A CN 108505372A
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- paper
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- water
- domestic waste
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/06—Rotary screen-drums
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
- D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
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- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/06—Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
- D21H17/26—Ethers thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- 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
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
本发明涉及一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法,属于造纸技术领域。本发明方法包括制浆步骤和抄纸步骤,是将国产废纸用分级筛分级后,将长纤维用于面层,短纤维用于底层;本发明在底层浆中加入少量细木粉,提高了牛卡纸的挺度;在两层中间喷淋淀粉和CMC复配体系,提高了牛卡纸的层间结合力;浆内加淀粉和聚丙烯酰胺双元增强剂,提高了产品强度。另外,本发明将浆内抗水和表面抗水结合,同时将浆内阻燃和层间阻燃技术综合,提高了牛卡纸产品抗水性的同时使产品达到了难燃效果。由此可见,本发明方法节能、环保,且制得的牛卡纸产品定量低,挺度高,防水性能优异,阻燃性能好,非常适用于电商专用纸箱。
Description
技术领域
本发明属于造纸技术领域,涉及一种牛卡纸的制造方法,更具体地说,本发明涉及一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法。
背景技术
牛卡纸是一种以本色木浆及废纸制造的本色卡纸,牛卡纸的使用范围广泛,主要用 于包装用纸。牛卡纸是电商纸箱最外面那层纸板(或叫箱纸板、面纸等),要求好的挺度,抗水性,它的生产技术相对于其他包装纸板来说比较高,主要是制浆、造纸流程比 较复杂,产品的质量技术要求也较高。
近年来随着资源回收力度的不断加大,以及由于电商市场的迅猛发展使更多的包装 材料在国内流通、回收,国产废纸的回收率也在不断提高。现有电子商务用纸箱的面纸一般都用废纸制造,多数情况存在挺度低、抗水性差、没有阻燃处理的缺点。采用进口 废纸(其纤维长,质量好)生产的电商纸箱面纸一般质量较好(主要指挺度等强度指标), 但原料成本高,盈利压力大。
现有技术中利用国产废纸生产牛卡纸主要存在以下技术问题:(1)国产废纸质量相 比进口的较差(主要是纤维短,强度低),生产的电商纸箱面纸一般质量较差,挺度等 强度指标低,如果在现在低克重趋势下,这种影响更明显,所以对包装产品会造成损害; (2)由于国产废纸使用增加,对废纸进行抗水处理相对原生木浆更困难,所以常规的 浆内加施胶剂和表面施胶往往不能满足抗水性要求,造成电子商务用纸箱的抗水性差, 在雨天,尤其南方,会对包装的产品直接造成损伤或损害,特别是电子类产品;(3)目 前阻燃技术仅用于少量的高档包装箱或特殊产品,如出口产品,少量高档消费品,易燃 易爆品、军工品等。一般电子商务用纸箱是没有阻燃处理的,这是种隐患,电商箱运输 或贮存过程中火灾也时有发生,如大量堆放、运输过程中的火灾隐患。
综上所述,开发出一种利用国产废纸生产挺度高、抗水性能优异并具有阻燃性能的 牛卡纸是包装纸箱未来的必然发展趋势。
发明内容
本发明针对背景技术中所指出的问题及现有技术存在的不足,目的在于提供一种利 用国产废纸生产低克重高强度电商专用牛卡纸的方法。
为了实现本发明的上述目的,本发明上述所述的利用国产废纸生产低克重高强度电 商专用牛卡纸的方法,所述方法主要包括如下步骤:
(1)制浆步骤:将国产废纸经水力碎浆机碎解后,进行高浓除渣,然后经一级三 段粗筛,再经分级筛分成长纤维和短纤维,所述长纤维先经一级三段除渣处理,除渣后 的长纤维再分别依次经过一级三段精筛处理、多盘回收机浓缩处理、锥形精浆机精磨处 理后,进一步用白水稀释打浆,制得长纤维精浆,将所述长纤维精浆贮存于成浆池中备 用;所述短纤维经一级二段精筛处理后,再用锥形精浆机精磨,进一步用白水稀释打浆, 制得短纤维精浆,将所述短纤维精浆贮存于短纤维成浆池备用,其中,所述长纤维精浆 浓度为3.5wt~4.5wt%,短纤维精浆的浓度为4wt~5wt%;
(2)抄纸步骤:
将步骤(1)所述长纤维精浆和短纤维精浆按质量份数比为80~90:10~20的比例混合均匀后加入增强剂、浆内抗水剂、阻燃剂,得到面层用浆料;将所述短纤维精浆和 木粉浆按质量份数比为90~95:5~10的比例混合均匀后,得到底层用浆料;然后将面 层用浆料和底层用浆料通过流送系统分别流送至面网系统、底网系统,经单独上网滤水 抄造分别形成湿纸页,再在50~60℃条件下在湿纸层间喷淋浓度为0.05~0.1%的喷淋 剂水溶液,将湿纸页复合、压榨脱水后制得半干湿纸页,进一步用浓度为10~15%的表 面抗水剂在50~60℃条件下将所述半干湿纸页进行表面抗水处理,最后经烘干、软压 光、卷取得到本发明所述的牛卡纸产品;
其中,所述流送系统中添加有助留助滤剂;
所述木粉浆的浓度为3wt~5wt%;所述木粉浆是按如下方法制备而成:将木粉用精 磨机处理后,制得精磨木粉,然后用氢氧化钠和碳酸钠组成的混合碱水溶液对所述精磨木粉进行润胀处理,控制润胀处理的温度为70~90℃,处理时间为60~90min,最后加 水搅拌稀释,得到底层用木粉浆料,贮存于木粉浆池中备用;所述木粉、氢氧化钠、碳 酸钠的质量比为1:0.01~0.03:0.01~0.03;所述润胀处理和木粉浆稀释用水均为牛卡 纸机的烘缸冷凝水。
进一步地,上述技术方案中所述牛卡纸产品由面层和底层两层组成,所述牛卡纸产 品的定量为100~120g/m2,所述面层与底层的质量比为40~50%:50~60%。
进一步地,上述技术方案中所述分级筛筛分出的长纤维和短纤维的质量比为30~40%:60~70%,所述长纤维的平均长度为1.8~2.5mm,短纤维的平均长度为1.0~ 1.8mm。
进一步地,上述技术方案步骤(1)中所述一级三段精筛中的第一段压力筛采用微缝宽压力筛除胶粘物,所述压力筛筛缝宽为0.08~0.12mm。
进一步地,上述技术方案步骤(1)中长纤维采用锥形精浆机串联精浆,利用长纤维粘状打浆技术,所述长纤维的打浆度为28~300SR。
进一步地,上述技术方案步骤(2)中所述增强剂是由淀粉和聚丙烯酰胺组成的双元增强剂,所述淀粉、聚丙烯酰胺用量与面层用纤维浆料总重量比为0.005~0.015:0.0002~0.0005:1;所述浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,所述碳酸锆胺、烯基琥珀酐用量与面层用纤维浆料总重量比为0.001~0.0015:0.0004~0.0008:1。
进一步地,上述技术方案步骤(2)中所述阻燃剂为改性的复合阻燃剂,所述复合阻燃剂由三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝组成,所述改性剂为N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂,所述改性剂用量为复合阻燃剂的0.5~0.8%;其中:所述 三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝用量与面层用纤维浆料总重量比为0.005~ 0.015:0.008~0.02:0.08~0.12:0.005~0.02:1;所述三氧化二锑和氢氧化铝均为超 细粉末,所述三氧化二锑的粒径为0.03~0.05um,所述氢氧化铝的粒径为0.05~0.08um; 所述改性的复合阻燃是采用如下工艺制备而成:将三氧化二锑、聚磷酸铵、氢氧化铝、 磷酸铝和N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂在20~25℃条件下分别加入到有 机溶剂中,搅拌20~40min,分散均匀后挥发有机溶剂得到所述改性的复合阻燃剂。
进一步地,上述技术方案步骤(2)中所述助留助滤剂是由阳离子聚丙烯酰胺和膨润土组成的双元体系,所述阳离子聚丙烯酰胺、膨润土用量与纤维浆料总重量比为 0.001~0.002:0.002~0.004:1。
进一步地,上述技术方案步骤(2)中所述喷淋剂是由淀粉、羧甲基纤维素CMC、 焦磷酸铵、磷酸铵组成的混合物,其中:所述淀粉是酶转化的玉米淀粉,所述淀粉、羧 甲基纤维素CMC、焦磷酸铵、磷酸铵的用量与纤维浆料总重量比例为0.005~0.010: 0.005~0.010:0.005~0.008:0.005~0.008:1。
进一步地,上述技术方案步骤(2)中采用表面抗水技术,在压榨后,烘干前设置 辊式表面抗水处理机对压榨脱水后的半干复合湿纸页进行表面抗水处理,所述表面抗水 剂由淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物和碳酸锆胺组成,所述淀粉、 羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物、碳酸锆胺的用量与纤维浆料总重量比 为0.006~0.012:0.006~0.012:0.005~0.01:0.001~0.0015:1。
进一步地,上述技术方案步骤(2)中所述软压光工艺具体是采用双辊软压光技术。
进一步地,上述技术方案中所述国产废纸为国产旧瓦楞纸箱。
进一步地,上述技术方案中采用混合碱润胀对木粉处理的目的是使木粉纤维适当软 化。
进一步地,本发明上述经一级三段精筛处理后的尾渣可经疏解和磨浆处理后作为瓦 楞芯纸的配浆进行回收利用。
进一步地,本发明上述制备方法中的压榨脱水、表面抗水处理、干燥、软压光和卷取工艺产生的损纸可作为瓦楞芯纸的配浆,多余白水用于瓦楞芯纸的生产用水。
与现有技术相比,本发明的优点和有益效果为:
(1)本发明方法对国产旧纸箱类废纸用分级筛分级后,将长纤维用于面层,短纤维用于底层;在底层浆中加入少量细木粉,提高了牛卡纸的挺度;在两层中间喷淋淀粉 和CMC复配体系,提高了牛卡纸的层间结合力;浆内加淀粉和聚丙烯酰胺双元增强剂, 提高了产品强度;采用长纤维粘状打浆,减少对纤维切断,保证了牛卡纸的强度;造纸 过程采用软压光技术,保持产品松厚度,进而提高挺度。
(2)本发明同时采用浆内和表面综合抗水技术,浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,表面抗水剂采用淀粉、羧甲基纤维素CMC、苯乙烯— 丙烯酸酯共聚物和碳酸锆胺组成的复合抗水体系,将浆内抗水和表面抗水结合,大大提 高了牛卡纸的抗水性。
(3)本发明采用浆内和层间综合阻燃技术,浆内添加用N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂改性的复合阻燃剂:三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝混合 阻燃剂,提高了水不溶性和阻燃效果,且综合发挥了多种阻燃元素的协同阻燃作用;另 外,本发明在各网部湿纸层间采用喷淋增强及阻燃技术,采用淀粉和羧甲基纤维素CMC 混合体系,再配以焦磷酸铵和磷酸铵阻燃剂组成复配体系进行喷淋,使产品达到难燃效 果。
(4)本发明节能、环保:本发明利用全国产废纸生产低定量产品,节约资源、环 保,比进口废纸成本低;采用微缝宽压力筛除胶粘物,取消热分散系统,节约大量蒸汽; 其精筛压力筛尾渣和损纸以及其多余白水用于生产瓦楞芯纸,节约纤维资源,节水。
(5)本发明方法制备的低克重高强度的牛卡纸,牛卡纸在结构上分为两层:面层和底层,主要用于电商纸箱的面纸,解决现有技术中纸箱挺度低、抗水性差、不具有阻 燃性的缺陷。
附图说明
图1为本发明所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法的工艺流程图。
具体实施方式
下面通过具体的实施例和附图对本发明的技术方案做进一步详细地说明。以下实施 例仅是本发明较佳的实施例,并非是对本发明做其他形式的限定,任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更为同等变化的等效实施例。凡是未脱离本发明方案内容,依据本发明的技术实质对以下实施例所做的任何简单修改或等同变化, 均落在本发明的保护范围内。
实施例1
本实施例的一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法,所述方法 主要包括如下步骤:
(1)制浆步骤:将国产旧瓦楞纸箱经水力碎浆机碎解后,进行高浓除渣,然后经 一级三段粗筛,再经分级筛分成长纤维和短纤维,所述长纤维先经一级三段除渣处理, 渣子排放,除渣后的长纤维再分别依次经过一级三段精筛处理、多盘回收机浓缩处理、 锥形精浆机精磨处理后,进一步用白水稀释打浆,制得长纤维精浆,将所述长纤维精浆 贮存于成浆池中备用,一级三段精筛处理后的尾渣经疏解和磨浆处理后作为瓦楞芯纸的 配浆;所述短纤维经一级二段精筛处理后,再用锥形精浆机精磨,进一步用白水稀释打 浆,制得短纤维精浆,将所述短纤维精浆贮存于短纤维成浆池备用;
其中,所述长纤维精浆浓度为3.5wt%,短纤维精浆的浓度为4wt%;所述长纤维的平均长度为1.8~2.5mm,短纤维的平均长度为1.0~1.8mm;所述一级三段精筛中的第 一段压力筛采用微缝宽压力筛除胶粘物,所述压力筛筛缝宽为0.08mm;长纤维采用锥 形精浆机串联精浆,利用长纤维粘状打浆技术,所述长纤维的打浆度为280SR;
(2)抄纸步骤:
将步骤(1)所述长纤维精浆和短纤维精浆按质量份数比为80:20的比例混合均匀后加入增强剂、浆内抗水剂、阻燃剂,得到面层用浆料;将所述短纤维精浆和木粉浆按 质量份数比为90:10的比例混合均匀后,得到底层用浆料;然后将面层用浆料和底层 用浆料通过流送系统分别流送至面网系统、底网系统,经单独上网滤水抄造分别形成湿 纸页,再在50℃条件下在湿纸层间喷淋浓度为0.05%的喷淋剂水溶液,将湿纸页复合、 压榨脱水后制得半干湿纸页,进一步用浓度为10%的表面抗水剂在50℃条件下将所述 半干湿纸页进行表面抗水处理,最后经烘干、软压光、卷取得到本发明所述的牛卡纸产 品,损纸作为瓦楞芯纸的配浆,多余白水用于瓦楞芯纸的生产用水;所述软压光工艺具 体是采用双辊软压光技术;
其中,所述流送系统中添加有助留助滤剂,所述木粉浆的浓度为3wt%;所述木粉浆是按如下方法制备而成:将木粉用精磨机处理后,制得精磨木粉,然后用氢氧化钠和 碳酸钠组成的混合碱水溶液对所述精磨木粉进行润胀处理,控制润胀处理的温度为 70℃,处理时间为60min,最后加水搅拌稀释,得到底层用木粉浆料,贮存于木粉浆池 中备用;所述木粉、氢氧化钠、碳酸钠的质量比为1:0.01:0.01;所述润胀处理和木 粉浆稀释用水均为牛卡纸机的烘缸冷凝水,采用混合碱润胀对木粉处理的目的是使木粉 纤维适当软化;
所述增强剂是由淀粉和聚丙烯酰胺组成的双元增强剂,所述淀粉、聚丙烯酰胺用量 与面层用纤维浆料总重量比为0.005:0.0002:1;所述浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,所述碳酸锆胺、烯基琥珀酐用量与面层用纤维浆料总重 量比为0.001:0.0004:1;
所述阻燃剂为改性的复合阻燃剂,所述复合阻燃剂由三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝组成,所述改性剂为N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂,所述 改性剂用量为复合阻燃剂的0.5%;其中:所述三氧化二锑、聚磷酸铵、氢氧化铝、磷 酸铝用量与面层用纤维浆料总重量比为0.005:0.008:0.08:0.005:1;所述三氧化二 锑和氢氧化铝均为超细粉末,所述三氧化二锑的粒径为0.03~0.05um,所述氢氧化铝的 粒径为0.05~0.08um;所述改性的复合阻燃是采用如下工艺制备而成:将三氧化二锑、 聚磷酸铵、氢氧化铝、磷酸铝和N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂在20~25℃ 条件下分别加入到有机溶剂中,搅拌20~40min,分散均匀后挥发有机溶剂得到所述改 性的复合阻燃剂;
所述助留助滤剂是由阳离子聚丙烯酰胺和膨润土组成的双元体系,所述阳离子聚丙 烯酰胺、膨润土用量与纤维浆料总重量比为0.001:0.002:1;
所述喷淋剂是由淀粉、羧甲基纤维素CMC、焦磷酸铵和磷酸铵组成的混合物,其中:所述淀粉是酶转化的玉米淀粉,所述淀粉、羧甲基纤维素CMC、焦磷酸铵、磷酸 铵的用量与纤维浆料总重量比例为0.005:0.005:0.005:0.005:1;
本实施例采用表面抗水技术,在压榨后,烘干前设置辊式表面抗水处理机对压榨脱 水后的半干复合湿纸页进行表面抗水处理,所述表面抗水剂由淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物和碳酸锆胺组成,所述淀粉、羧甲基纤维素CMC、苯 乙烯—丙烯酸酯共聚物、碳酸锆胺的用量与纤维浆料总重量比为0.006:0.006:0.005: 0.001:1。
实施例2
本实施例的一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法,所述方法 主要包括如下步骤:
(1)制浆步骤:将国产旧瓦楞纸箱经水力碎浆机碎解后,进行高浓除渣,然后经 一级三段粗筛,再经分级筛分成长纤维和短纤维,所述长纤维先经一级三段除渣处理, 渣子排放,除渣后的长纤维再分别依次经过一级三段精筛处理、多盘回收机浓缩处理、 锥形精浆机精磨处理后,进一步用白水稀释打浆,制得长纤维精浆,将所述长纤维精浆 贮存于成浆池中备用,一级三段精筛处理后的尾渣经疏解和磨浆处理后作为瓦楞芯纸的 配浆;所述短纤维经一级二段精筛处理后,再用锥形精浆机精磨,进一步用白水稀释打 浆,制得短纤维精浆,将所述短纤维精浆贮存于短纤维成浆池备用;
其中,所述长纤维精浆浓度为4.5wt%,短纤维精浆的浓度为5wt%;所述长纤维的平均长度为1.8~2.5mm,短纤维的平均长度为1.0~1.8mm;所述一级三段精筛中的第 一段压力筛采用微缝宽压力筛除胶粘物,所述压力筛筛缝宽为0.12mm;长纤维采用锥 形精浆机串联精浆,利用长纤维粘状打浆技术,所述长纤维的打浆度为290SR;
(2)抄纸步骤:
将步骤(1)所述长纤维精浆和短纤维精浆按质量份数比为90:10的比例混合均匀后加入增强剂、浆内抗水剂、阻燃剂,得到面层用浆料;将所述短纤维精浆和木粉浆按 质量份数比为95:5的比例混合均匀后,得到底层用浆料;然后将面层用浆料和底层用 浆料通过流送系统分别流送至面网系统、底网系统,经单独上网滤水抄造分别形成湿纸 页,再在60℃条件下在湿纸层间喷淋浓度为0.1%的喷淋剂水溶液,将湿纸页复合、压 榨脱水后制得半干湿纸页,进一步用浓度为15%的表面抗水剂在60℃条件下将所述半 干湿纸页进行表面抗水处理,最后经烘干、软压光、卷取得到本发明所述的牛卡纸产品, 所述软压光工艺具体是采用双辊软压光技术;损纸作为瓦楞芯纸的配浆,多余白水用于 瓦楞芯纸的生产用水;
其中,所述流送系统中添加有助留助滤剂,所述木粉浆的浓度为5wt%;所述木粉浆是按如下方法制备而成:将木粉用精磨机处理后,制得精磨木粉,然后用氢氧化钠和 碳酸钠组成的混合碱水溶液对所述精磨木粉进行润胀处理,控制润胀处理的温度为 90℃,处理时间为90min,最后加水搅拌稀释,得到底层用木粉浆料,贮存于木粉浆池 中备用;所述木粉、氢氧化钠、碳酸钠的质量比为1:0.03:0.03;所述润胀处理和木 粉浆稀释用水均为牛卡纸机的烘缸冷凝水,采用混合碱润胀对木粉处理的目的是使木粉 纤维适当软化;
所述增强剂是由淀粉和聚丙烯酰胺组成的双元增强剂,所述淀粉、聚丙烯酰胺用量 与面层用纤维浆料总重量比为0.015:0.0005:1;所述浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,所述碳酸锆胺、烯基琥珀酐用量与面层用纤维浆料总重 量比为0.0015:0.0008:1;
所述阻燃剂为改性的复合阻燃剂,所述复合阻燃剂由三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝组成,所述改性剂为N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂,所述 改性剂用量为复合阻燃剂的0.8%;其中:所述三氧化二锑、聚磷酸铵、氢氧化铝、磷 酸铝用量与面层用纤维浆料总重量比为0.015:0.02:0.10:0.02:1;所述三氧化二锑 和氢氧化铝均为超细粉末,所述三氧化二锑的粒径为0.05um,所述氢氧化铝的粒径为 0.08um;所述改性的复合阻燃是采用如下工艺制备而成:将三氧化二锑、聚磷酸铵、氢 氧化铝、磷酸铝和N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂在20~25℃条件下分别 加入到有机溶剂中,搅拌20~40min,分散均匀后挥发有机溶剂得到所述改性的复合阻 燃剂;
所述助留助滤剂是由阳离子聚丙烯酰胺和膨润土组成的双元体系,所述阳离子聚丙 烯酰胺、膨润土用量与纤维浆料总重量比为0.002:0.004:1;
所述喷淋剂是由淀粉、羧甲基纤维素CMC、焦磷酸铵和磷酸铵组成的混合物,其中:所述淀粉是酶转化的玉米淀粉,所述淀粉、羧甲基纤维素CMC、焦磷酸铵、磷酸 铵的用量与纤维浆料总重量比例为0.010:0.010:0.008:0.008:1;
本实施例采用表面抗水技术,在压榨后,烘干前设置辊式表面抗水处理机对压榨脱 水后的半干复合湿纸页进行表面抗水处理,所述表面抗水剂由淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物和碳酸锆胺组成,所述淀粉、羧甲基纤维素CMC、苯 乙烯—丙烯酸酯共聚物、碳酸锆胺的用量与纤维浆料总重量比为0.012:0.012:0.01: 0.0015:1。
实施例3
本实施例的一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法,所述方法 主要包括如下步骤:
(1)制浆步骤:将国产旧瓦楞纸箱经水力碎浆机碎解后,进行高浓除渣,然后经 一级三段粗筛,再经分级筛分成长纤维和短纤维,所述长纤维先经一级三段除渣处理, 渣子排放,除渣后的长纤维再分别依次经过一级三段精筛处理、多盘回收机浓缩处理、 锥形精浆机精磨处理后,进一步用白水稀释打浆,制得长纤维精浆,将所述长纤维精浆 贮存于成浆池中备用,一级三段精筛处理后的尾渣经疏解和磨浆处理后作为瓦楞芯纸的 配浆;所述短纤维经一级二段精筛处理后,再用锥形精浆机精磨,进一步用白水稀释打 浆,制得短纤维精浆,将所述短纤维精浆贮存于短纤维成浆池备用,
其中,所述长纤维精浆浓度为4wt%,短纤维精浆的浓度为4.5wt%;所述长纤维的平均长度为1.8~2.5mm,短纤维的平均长度为1.0~1.8mm;所述一级三段精筛中的第 一段压力筛采用微缝宽压力筛除胶粘物,所述压力筛筛缝宽为0.1mm;长纤维采用锥形 精浆机串联精浆,利用长纤维粘状打浆技术,所述长纤维的打浆度为300SR;
(2)抄纸步骤:
将步骤(1)所述长纤维精浆和短纤维精浆按质量份数比为85:15的比例混合均匀后加入增强剂、浆内抗水剂、阻燃剂,得到面层用浆料;将所述短纤维精浆和木粉浆按 质量份数比为90:10的比例混合均匀后,得到底层用浆料;然后将面层用浆料和底层 用浆料通过流送系统分别流送至面网系统、底网系统,经单独上网滤水抄造分别形成湿 纸页,再在55℃条件下在湿纸层间喷淋浓度为0.06%的喷淋剂水溶液,将湿纸页复合、 压榨脱水后制得半干湿纸页,进一步用浓度为12%的表面抗水剂在55℃条件下将所述 半干湿纸页进行表面抗水处理,最后经烘干、软压光、卷取得到本发明所述的牛卡纸产 品,所述软压光工艺具体是采用双辊软压光技术;损纸作为瓦楞芯纸的配浆,多余白水 用于瓦楞芯纸的生产用水;
其中,所述流送系统中添加有助留助滤剂,所述木粉浆的浓度为4wt%;所述木粉浆是按如下方法制备而成:将木粉用精磨机处理后,制得精磨木粉,然后用氢氧化钠和 碳酸钠组成的混合碱水溶液对所述精磨木粉进行润胀处理,控制润胀处理的温度为 80℃,处理时间为70min,最后加水搅拌稀释,得到底层用木粉浆料,贮存于木粉浆池 中备用;所述木粉、氢氧化钠、碳酸钠的质量比为1:0.02:0.02;所述润胀处理和木 粉浆稀释用水均为牛卡纸机的烘缸冷凝水,采用混合碱润胀对木粉处理的目的是使木粉 纤维适当软化;
所述增强剂是由淀粉和聚丙烯酰胺组成的双元增强剂,所述淀粉、聚丙烯酰胺用量 与面层用纤维浆料总重量比为0.01:0.0004:1;所述浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,所述碳酸锆胺、烯基琥珀酐用量与面层用纤维浆料总重 量比为0.0012:0.0006:1;
所述阻燃剂为改性的复合阻燃剂,所述复合阻燃剂由三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝组成,所述改性剂为N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂,所述 改性剂用量为复合阻燃剂的0.6%;其中:所述三氧化二锑、聚磷酸铵、氢氧化铝、磷 酸铝用量与面层用纤维浆料总重量比为0.01:0.01:0.12:0.01:1;所述三氧化二锑和 氢氧化铝均为超细粉末,所述三氧化二锑的粒径为0.03~0.05um,所述氢氧化铝的粒径 为0.05~0.08um;所述改性的复合阻燃是采用如下工艺制备而成:将三氧化二锑、聚磷 酸铵、氢氧化铝、磷酸铝和N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂在25℃条件下 分别加入到有机溶剂中,搅拌30min,分散均匀后挥发有机溶剂得到所述改性的复合阻 燃剂;
所述助留助滤剂是由阳离子聚丙烯酰胺和膨润土组成的双元体系,所述阳离子聚丙 烯酰胺、膨润土用量与纤维浆料总重量比为0.0018:0.003:1;
所述喷淋剂是由淀粉、羧甲基纤维素CMC、焦磷酸铵和磷酸铵组成的混合物,其中:所述淀粉是酶转化的玉米淀粉,所述淀粉、羧甲基纤维素CMC、焦磷酸铵、磷酸 铵的用量与纤维浆料总重量比例为0.008:0.006:0.006:0.006:1;
本实施例采用表面抗水技术,在压榨后,烘干前设置辊式表面抗水处理机对压榨脱 水后的半干复合湿纸页进行表面抗水处理,所述表面抗水剂由淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物和碳酸锆胺组成,所述淀粉、羧甲基纤维素CMC、苯 乙烯—丙烯酸酯共聚物、碳酸锆胺的用量与纤维浆料总重量比为0.01:0.01:0.006: 0.0012:1。
将上述实施例1~3制得的牛卡纸产品和现有技术中的牛卡纸的物理性能分别进行 测试,测试指标包括牛卡纸的定量、挺度、吸水性和阻燃性,具体测试结果见下表1。 由表1可以看出,本申请利用国产废纸生产的牛卡纸的定量低,挺度高,正面吸水性差, 防水性能优异,阻燃性能好,均优于现有技术中的牛卡纸,因此,本申请制得的牛卡纸 产品非常适用于电商专用纸箱。
表1为实施例1~3制得的牛卡纸产品及现有技术中的牛卡纸(市售优等品)的技术指 标测试结果表
技术指标 | 实施例1 | 实施例2 | 实施例3 | 市售优等品 |
定量g/m2 | 100 | 120 | 118 | 115-120 |
挺度mN·m | 1.3 | 1.6 | 1.5 | 1.0-1.2 |
正面吸水性g/m2 | 32.2 | 30.3 | 31.6 | 35-40 |
阻燃性(极限氧指数%) | 26.6 | 27.7 | 27.0 | 19-20 |
Claims (10)
1.一种利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:所述方法主要包括如下步骤:
(1)制浆步骤:将国产废纸经水力碎浆机碎解后,进行高浓除渣,然后经一级三段粗筛,再经分级筛分成长纤维和短纤维,所述长纤维先经一级三段除渣处理,除渣后的长纤维再分别依次经过一级三段精筛处理、多盘回收机浓缩处理、锥形精浆机精磨处理后,进一步用白水稀释打浆,制得长纤维精浆,将所述长纤维精浆贮存于成浆池中备用;所述短纤维经一级二段精筛处理后,再用锥形精浆机精磨,进一步用白水稀释打浆,制得短纤维精浆,将所述短纤维精浆贮存于短纤维成浆池备用,其中,所述长纤维精浆浓度为3.5wt~4.5wt%,短纤维精浆的浓度为4wt~5wt%;
(2)抄纸步骤:
将步骤(1)所述长纤维精浆和短纤维精浆按质量份数比为80~90:10~20的比例混合均匀后加入增强剂、浆内抗水剂、阻燃剂,得到面层用浆料;将所述短纤维精浆和木粉浆按质量份数比为90~95:5~10的比例混合均匀后,得到底层用浆料;然后将面层用浆料和底层用浆料通过流送系统分别流送至面网系统、底网系统,经单独上网滤水抄造分别形成湿纸页,再在50~60℃条件下在湿纸层间喷淋浓度为0.05~0.1%的喷淋剂水溶液,将湿纸页复合、压榨脱水后制得半干湿纸页,进一步用浓度为10~15%的表面抗水剂在50~60℃条件下将所述半干湿纸页进行表面抗水处理,最后经烘干、软压光、卷取得到本发明所述的牛卡纸产品;
其中,所述流送系统中添加有助留助滤剂;
所述木粉浆的浓度为3wt~5wt%;所述木粉浆是按如下方法制备而成:将木粉用精磨机处理后,制得精磨木粉,然后用氢氧化钠和碳酸钠组成的混合碱水溶液对所述精磨木粉进行润胀处理,控制润胀处理的温度为70~90℃,处理时间为60~90min,最后加水搅拌稀释,得到底层用木粉浆料,贮存于木粉浆池中备用;所述木粉、氢氧化钠、碳酸钠的质量比为1:0.01~0.03:0.01~0.03;所述润胀处理和木粉浆稀释用水均为牛卡纸机的烘缸冷凝水。
2.根据权利要求1所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:所述牛卡纸产品由面层和底层两层组成,所述牛卡纸产品的定量为100~120g/m2,所述面层与底层的质量比为40~50%:50~60%。
3.根据权利要求1或2所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:所述分级筛筛分出的长纤维和短纤维的质量比为30~40%:60~70%。
4.根据权利要求1所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:步骤(1)中所述一级三段精筛中的第一段压力筛采用微缝宽压力筛除胶粘物,所述压力筛筛缝宽为0.08~0.12mm。
5.根据权利要求1或4所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:步骤(1)中长纤维采用锥形精浆机串联精浆,利用长纤维粘状打浆技术,所述长纤维的打浆度为28~300SR。
6.根据权利要求1或4或5所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:步骤(2)中所述增强剂是由淀粉和聚丙烯酰胺组成的双元增强剂,所述淀粉、聚丙烯酰胺用量与面层用纤维浆料总重量比为0.005~0.015:0.0002~0.0005:1;所述浆内抗水剂采用碳酸锆胺和烯基琥珀酐组合成的复合抗水体系,所述碳酸锆胺、烯基琥珀酐用量与面层用纤维浆料总重量比为0.001~0.0015:0.0004~0.0008:1。
7.根据权利要求1所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:步骤(2)中所述阻燃剂为改性的复合阻燃剂,所述复合阻燃剂由三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝组成,所述改性剂为N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂,所述改性剂用量为复合阻燃剂的0.5~0.8%;其中:所述三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝用量与面层用纤维浆料总重量比为0.005~0.015:0.008~0.02:0.08~0.12:0.005~0.02:1;所述三氧化二锑和氢氧化铝均为超细粉末,所述三氧化二锑的粒径为0.03~0.05um,所述氢氧化铝的粒径为0.05~0.08um;所述改性的复合阻燃是采用如下工艺制备而成:将三氧化二锑、聚磷酸铵、氢氧化铝、磷酸铝和N-(β-氨乙基)-r-氨丙基三甲氧基硅烷偶联剂在20~25℃条件下分别加入到有机溶剂中,搅拌20~40min,分散均匀后挥发有机溶剂得到所述改性的复合阻燃剂。
8.根据权利要求1或7所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:步骤(2)中所述助留助滤剂是由阳离子聚丙烯酰胺和膨润土组成的双元体系,所述阳离子聚丙烯酰胺、膨润土用量与纤维浆料总重量比为0.001~0.002:0.002~0.004:1;所述喷淋剂是由淀粉、羧甲基纤维素CMC、焦磷酸铵、磷酸铵组成的混合物,其中:所述淀粉是酶转化的玉米淀粉,所述淀粉、羧甲基纤维素CMC、焦磷酸铵、磷酸铵的用量与纤维浆料总重量比例为0.005~0.010:0.005~0.010:0.005~0.008:0.005~0.008:1。
9.根据权利要求1所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:所述表面抗水剂由淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物和碳酸锆胺组成,所述淀粉、羧甲基纤维素CMC、苯乙烯—丙烯酸酯共聚物、碳酸锆胺的用量与纤维浆料总重量比为0.006~0.012:0.006~0.012:0.005~0.01:0.001~0.0015:1。
10.根据权利要求1所述的利用国产废纸生产低克重高强度电商专用牛卡纸的方法,其特征在于:所述软压光工艺具体是采用双辊软压光技术。
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