CN107460784A - 一种回收再使用的箱板纸生产方法 - Google Patents
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Abstract
本发明涉及一种回收再使用的箱板纸生产方法,包括纸张本体,由上至下纸张本体依次包括面层、芯层和底层,依次包括以下步骤:面层原料配比、第一次碎解、第一次磨浆、芯层和底层原料配比、第二次碎解、第二次磨浆、底层浆料制备、芯层浆料制备、网部成型、压榨、第一次干燥、表面施胶、第二次干燥、压光、卷取分切;本发明的优点:通过在网部成型中加入纸张抗爆裂剂,纸张抗爆裂剂增强与纤维间的接触面积形成更多的氢键结合,提高纤维间的结合力,减缓了纤维角质化,提高了箱板纸的耐折度,保证多次回用后表面不脱皮,从而减少了烟箱的损坏率,提高烟箱单次循环使用率,且多次回用后保证纸箱强度不下降、不破损,不影响二次使用。
Description
技术领域
本发明涉及一种回收再使用的箱板纸生产方法。
背景技术
近几年,全国卷烟产销量基本稳定在5000万箱左右,需要使用烟箱约2.5亿只,数量巨大,为深入贯彻落实党的十八大精神,加快转变烟草行业发展方式,构建循环型烟草物流体系,进一步降低成本、减少浪费、节约资源,国家烟草专卖局每年下达下一年度行业卷烟包装箱循环利用目标任务,在行业工商企业间推行开展卷烟包装箱循环利用工作。
烟箱每多循环一次,从小处看,意味着采购减少,成本降低,资源节约,利用率提高;往大里讲,可以推进绿色发展、循环发展、低碳发展,是行业科学发展、彰显“责任”烟草的生动体现;尤其在外部环境复杂多变、经济下行压力依然存在、“四大难题”影响渐深的形势下,烟箱循环利用的“绿色”行动显得内涵十足,现有烟箱采用进口美国华松牛卡纸和澳大利亚牛卡纸制成,其生产成本高,且箱板的耐磨性差,烟箱的损坏率高,多次回收再使用后烟箱的强度下降和烟箱易破损,不利于二次使用。
发明内容
本发明要解决的技术问题就是提供一种回收再使用的箱板纸生产方法,解决现有箱板纸不利于二次使用的问题。
为了解决上述技术问题,本发明是通过以下技术方案实现的:一种回收再使用的箱板纸生产方法,包括纸张本体,由上至下纸张本体依次包括面层、芯层和底层,面层包括以下组分组成:马林斯基未漂硫酸盐针叶木浆40~60%和金星木浆40~60%,芯层和底层均包括以下组分组成:旧瓦楞纸箱40~60%和国内废纸40~60%,依次包括以下步骤:
步骤一:面层原料配比:将马林斯基未漂硫酸盐针叶木浆和金星木浆混合制成面层原料木浆;
步骤二:第一次碎解:将步骤一配比后的面层原料木浆投入破碎机中,并在破碎机中加入180~200PPm的生物酶后碎解形成浓度为4.5%的浆料;
步骤三:第一次磨浆:将步骤二碎解形成的浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的面层浆料进入成浆池,面层浆料的浓度为4.3~4.5%,面层浆料的游离度为300~350csf;
步骤四:芯层和底层原料配比:将旧瓦楞纸箱和国内废纸混合制成木浆;
步骤五:第二次碎解:将步骤四混合制成的木浆通过破碎机进行破解处理,并通过筛选机将破解后的浆料分离成长纤维浆料和短纤维浆料;
步骤六:第二次磨浆:将步骤五碎解形成的长纤维浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的长纤维浆料进入成浆池,且长纤维浆料的浓度为4.3~4.5%,游离度为300~330ml,步骤五碎解形成的短纤维浆料经过两台串联的双盘磨机进行磨浆处理,且短纤维浆料的浓度为4.3~4.5%,游离度为340~360ml,并将磨浆后的短纤维浆料进入成浆池;
步骤七:底层浆料制备:将步骤六磨浆后的长纤维浆料和短纤维浆料混合制成底层浆料,且长纤维浆料和短纤维浆料的质量比为4:1;
步骤八:芯层浆料制备:将步骤六磨浆后的端纤维制成芯层浆料;
步骤九:网部成型:将步骤三制备的面层浆料经过冲浆泵稀释后进入面层流浆箱,将步骤七制备后的底层浆料经过冲浆泵稀释后进入底层流浆箱,将步骤八制备后的芯层浆料经过冲浆泵稀释后进入芯层流浆箱,底层流浆箱后设有顶网成型器中进行逆向脱水处理形成纸张,并在冲浆泵出口处加入纸张抗爆裂剂,浆料依靠纸张抗爆裂剂来增强与纤维间的接触面积,纸张抗爆裂剂的加入量为90~100PPm;
步骤十:压榨:将步骤九成型后的纸张经过靴式压榨使纸张进一步脱水,靴式压榨的线压力为1200~1500N/cm,出压榨干度为48~50%;
步骤十一:第一次干燥:将步骤十压榨后的纸张进入烘缸进行烘干干燥处理;
步骤十二:表面施胶:将步骤十一干燥后的纸张的底层和面层分别进行表面处理剂涂覆处理,表面处理剂包括PAE型湿强剂和AKD,且PAE型湿强剂的加入量为5~6kg/吨,AKD的加入量为6~8kg/吨;
步骤十三:第二次干燥:将步骤十二表面施胶的纸张进入烘缸进行烘干干燥处理;
步骤十四:压光:将步骤十三第二次干燥后的纸张进入热辊软压光机进行压光出料,压光机的上辊为热辊,下辊为可控中高辊且外包高强度聚胺脂,上辊的温度为145~155℃,加压线压力为40~60N/cm;
步骤十五:卷取分切:将步骤十四压光后的纸张通过收卷机进行卷取并进行分切处理。
优选的,步骤三和步骤六中的两台串联的双盘磨机中的一台双盘磨机设有窄齿磨片,另外一台双盘磨机均设有宽齿磨片,能保证纸张的均匀度,提高纸张的强度。
优选的,步骤九中的顶网成型器下设有调节顶网成型器内真空度的靴板,通过靴板调节顶网成型器内真空度,可以提高纸张Z向的纤维分布,提高纸张的松厚度。
综上所述,本发明的优点:1.通过面层原料配比、第一次碎解、第一次磨浆、芯层和底层原料配比、第二次碎解、第二次磨浆、底层浆料制备、芯层浆料制备、网部成型、压榨、第一次干燥、表面施胶、第二次干燥、压光、卷取分切的生产方法制成的箱板纸,本发明通过步骤二第一次碎解中加入的生物酶来促进纤维吸水润胀和分丝帚化,提高了打浆度,通过在网部成型中加入纸张抗爆裂剂,纸张抗爆裂剂增强与纤维间的接触面积形成更多的氢键结合,提高纤维间的结合力,减缓了纤维角质化,提高了箱板纸的耐折度,保证多次回用后表面不脱皮,从而减少了烟箱的损坏率,提高烟箱单次循环使用率,且多次回用后保证纸箱强度不下降、不破损,不影响二次使用,在表面施胶过程中涂覆PAE型湿强剂和AKD混合制成的表面处理剂,能增强纸张的自固着性,增加阳离子电位,形成网络耐水结构,促进施胶剂的熟化反应,提高了箱板纸抗水性能,延长了使用寿命;
2.通过马林斯基未漂硫酸盐针叶木浆和金星木浆作为面层浆料的原料,旧瓦楞纸箱和国内废纸作为芯层浆料和底层浆料的原料,有效的降低了生产成本,节约了原材料,且实现了旧瓦楞纸箱和国内废纸的回收利用,具有良好的环境效益及社会效益;
3.步骤二中加入的生物酶还可以降低了获得相同纸张强度所需的磨浆电耗,减少了能耗;
4.步骤十中采用的靴式压榨,与传统压榨相比,靴式压榨将辊式压榨的瞬时动态脱水,改为静压下的长时间宽压区脱水,靴形压榨的压区宽度为传统压区的6~10倍,由于该特性,在相同的车速条件下,纸页在靴形压区的停留时间即为传统辊式压区的6~10倍。同时,靴形压榨采用大大高于传统的辊压线压力,有助于提高纸页脱水效率,更有利于纸幅的固化,使纸张获得更好的强度和松厚度,提高产品性能;
5.压光步骤利用了纤维的热可塑性,对纸页表面进行整饰纸,提高平滑度;下辊上设有的高强度聚胺脂,保证纸页松厚度。
具体实施方式
一种回收再使用的箱板纸生产方法,包括纸张本体,由上至下纸张本体依次包括面层、芯层和底层,面层包括以下组分组成:马林斯基未漂硫酸盐针叶木浆40~60%和金星木浆40~60%,芯层和底层均包括以下组分组成:旧瓦楞纸箱40~60%和国内废纸40~60%,依次包括以下步骤:
步骤一:面层原料配比:将马林斯基未漂硫酸盐针叶木浆和金星木浆混合制成面层原料木浆;
步骤二:第一次碎解:将步骤一配比后的面层原料木浆投入破碎机中,并在破碎机中加入180~200PPm的生物酶后碎解形成浓度为4.5%的浆料;
步骤三:第一次磨浆:将步骤二碎解形成的浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的面层浆料进入成浆池,面层浆料的浓度为4.3~4.5%,面层浆料的游离度为300~350csf;
步骤四:芯层和底层原料配比:将旧瓦楞纸箱和国内废纸混合制成木浆;
步骤五:第二次碎解:将步骤四混合制成的木浆通过破碎机进行破解处理,并通过筛选机将破解后的浆料分离成长纤维浆料和短纤维浆料;
步骤六:第二次磨浆:将步骤五碎解形成的长纤维浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的长纤维浆料进入成浆池,且长纤维浆料的浓度为4.3~4.5%,游离度为300~330ml,步骤五碎解形成的短纤维浆料经过两台串联的双盘磨机进行磨浆处理,且短纤维浆料的浓度为4.3~4.5%,游离度为340~360ml,并将磨浆后的短纤维浆料进入成浆池;
步骤七:底层浆料制备:将步骤六磨浆后的长纤维浆料和短纤维浆料混合制成底层浆料,且长纤维浆料和短纤维浆料的质量比为4:1;
步骤八:芯层浆料制备:将步骤六磨浆后的端纤维制成芯层浆料;
步骤九:网部成型:将步骤三制备的面层浆料经过冲浆泵稀释后进入面层流浆箱,将步骤七制备后的底层浆料经过冲浆泵稀释后进入底层流浆箱,将步骤八制备后的芯层浆料经过冲浆泵稀释后进入芯层流浆箱,底层流浆箱后设有顶网成型器中进行逆向脱水处理形成纸张,并在冲浆泵出口处加入纸张抗爆裂剂,浆料依靠纸张抗爆裂剂来增强与纤维间的接触面积,纸张抗爆裂剂的加入量为90~100PPm;
步骤十:压榨:将步骤九成型后的纸张经过靴式压榨使纸张进一步脱水,靴式压榨的线压力为1200~1500N/cm,出压榨干度为48~50%;
步骤十一:第一次干燥:将步骤十压榨后的纸张进入烘缸进行烘干干燥处理;
步骤十二:表面施胶:将步骤十一干燥后的纸张的底层和面层分别进行表面处理剂涂覆处理,表面处理剂包括PAE型湿强剂和AKD,且PAE型湿强剂的加入量为5~6kg/吨,AKD的加入量为6~8kg/吨;
步骤十三:第二次干燥:将步骤十二表面施胶的纸张进入烘缸进行烘干干燥处理;
步骤十四:压光:将步骤十三第二次干燥后的纸张进入热辊软压光机进行压光出料,压光机的上辊为热辊,下辊为可控中高辊且外包高强度聚胺脂,上辊的温度为145~155℃,加压线压力为40~60N/cm;
步骤十五:卷取分切:将步骤十四压光后的纸张通过收卷机进行卷取并进行分切处理。
步骤三和步骤六中的两台串联的双盘磨机中的一台双盘磨机设有窄齿磨片,另外一台双盘磨机均设有宽齿磨片,能保证纸张的均匀度,提高纸张的强度,步骤九中的顶网成型器下设有调节顶网成型器内真空度的靴板,通过靴板调节顶网成型器内真空度,可以提高纸张Z向的纤维分布,提高纸张的松厚度。
除上述优选实施例外,本发明还有其他的实施方式,本领域技术人员可以根据本发明作出各种改变和变形,只要不脱离本发明的精神,均应属于本发明所附权利要求所定义的范围。
Claims (3)
1.一种回收再使用的箱板纸生产方法,包括纸张本体,由上至下纸张本体依次包括面层、芯层和底层,其特征在于:面层包括以下组分组成:马林斯基未漂硫酸盐针叶木浆40~60%和金星木浆40~60%,芯层和底层均包括以下组分组成:旧瓦楞纸箱40~60%和国内废纸40~60%,依次包括以下步骤:
步骤一:面层原料配比:将马林斯基未漂硫酸盐针叶木浆和金星木浆混合制成面层原料木浆;
步骤二:第一次碎解:将步骤一配比后的面层原料木浆投入破碎机中,并在破碎机中加入180~200PPm的生物酶后碎解形成浓度为4.5%的浆料;
步骤三:第一次磨浆:将步骤二碎解形成的浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的面层浆料进入成浆池,面层浆料的浓度为4.3~4.5%,面层浆料的游离度为300~350csf;
步骤四:芯层和底层原料配比:将旧瓦楞纸箱和国内废纸混合制成木浆;
步骤五:第二次碎解:将步骤四混合制成的木浆通过破碎机进行破解处理,并通过筛选机将破解后的浆料分离成长纤维浆料和短纤维浆料;
步骤六:第二次磨浆:将步骤五碎解形成的长纤维浆料经过两台串联的双盘磨机进行磨浆处理,并将磨浆后的长纤维浆料进入成浆池,且长纤维浆料的浓度为4.3~4.5%,游离度为300~330ml,步骤五碎解形成的短纤维浆料经过两台串联的双盘磨机进行磨浆处理,且短纤维浆料的浓度为4.3~4.5%,游离度为340~360ml,并将磨浆后的短纤维浆料进入成浆池;
步骤七:底层浆料制备:将步骤六磨浆后的长纤维浆料和短纤维浆料混合制成底层浆料,且长纤维浆料和短纤维浆料的质量比为4:1;
步骤八:芯层浆料制备:将步骤六磨浆后的端纤维制成芯层浆料;
步骤九:网部成型:将步骤三制备的面层浆料经过冲浆泵稀释后进入面层流浆箱,将步骤七制备后的底层浆料经过冲浆泵稀释后进入底层流浆箱,将步骤八制备后的芯层浆料经过冲浆泵稀释后进入芯层流浆箱,底层流浆箱后设有顶网成型器中进行逆向脱水处理形成纸张,并在冲浆泵出口处加入纸张抗爆裂剂,浆料依靠纸张抗爆裂剂来增强与纤维间的接触面积,纸张抗爆裂剂的加入量为90~100PPm;
步骤十:压榨:将步骤九成型后的纸张经过靴式压榨使纸张进一步脱水,靴式压榨的线压力为1200~1500N/cm,出压榨干度为48~50%;
步骤十一:第一次干燥:将步骤十压榨后的纸张进入烘缸进行烘干干燥处理;
步骤十二:表面施胶:将步骤十一干燥后的纸张的底层和面层分别进行表面处理剂涂覆处理,表面处理剂包括PAE型湿强剂和AKD,且PAE型湿强剂的加入量为5~6kg/吨,AKD的加入量为6~8kg/吨;
步骤十三:第二次干燥:将步骤十二表面施胶的纸张进入烘缸进行烘干干燥处理;
步骤十四:压光:将步骤十三第二次干燥后的纸张进入热辊软压光机进行压光出料,压光机的上辊为热辊,下辊为可控中高辊且外包高强度聚胺脂,上辊的温度为145~155℃,加压线压力为40~60N/cm;
步骤十五:卷取分切:将步骤十四压光后的纸张通过收卷机进行卷取并进行分切处理。
2.根据权利要求1所述的一种回收再使用的箱板纸生产方法,其特征在于:步骤三和步骤六中的两台串联的双盘磨机中的一台双盘磨机设有窄齿磨片,另外一台双盘磨机均设有宽齿磨片。
3.根据权利要求1所述的一种回收再使用的箱板纸生产方法,其特征在于:步骤九中的顶网成型器下设有调节顶网成型器内真空度的靴板。
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Application publication date: 20171212 |