CN109440533B - 一种利用竹浆生产高透伸性纸袋纸的方法 - Google Patents

一种利用竹浆生产高透伸性纸袋纸的方法 Download PDF

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CN109440533B
CN109440533B CN201811390810.7A CN201811390810A CN109440533B CN 109440533 B CN109440533 B CN 109440533B CN 201811390810 A CN201811390810 A CN 201811390810A CN 109440533 B CN109440533 B CN 109440533B
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pulp
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pulping
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CN109440533A (zh
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李素娟
陈绍虬
谢玉辉
程书杏
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Fujian Qingshan Paper Industry Co ltd
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    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02Processes 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
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    • D21H11/00Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04Kraft or sulfate pulp
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    • D21H11/00Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
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    • D21H15/00Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10Composite fibres
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    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03Non-macromolecular organic compounds
    • D21H17/05Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/17Ketenes, e.g. ketene dimers
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    • D21H17/20Macromolecular organic compounds
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    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/34Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
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    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
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    • D21H21/00Non-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
    • D21H21/06Paper forming aids
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    • D21H21/00Non-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
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    • D21H21/10Retention agents or drainage improvers
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    • D21H21/00Non-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
    • D21H21/14Non-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
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    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21H21/00Non-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
    • D21H21/14Non-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
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    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21H21/00Non-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
    • D21H21/14Non-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
    • D21H21/18Reinforcing agents

Abstract

本发明公开了一种利用竹浆生产高透伸性纸袋纸的方法,是经浆料真空浓缩机浓缩,高浓磨浆,低浓盘磨机,流送除砂,压力筛筛浆,经飘片式流浆箱上网成型,四辊三压区的压榨,干燥,卷取,复卷,打包制成的,具体是使用竹片和针叶木片混合,然后采用硫酸盐法制浆,经洗涤、筛选后所得的浆,经高浓打浆保持纤维的长度,后再经低浓打浆,接着添加辅料、压力筛筛浆、上网,上网成型后经四辊三压区压榨,再接着经干燥部干燥、伸性装置处理,制得纸袋纸。利用本发明的方法可以生产具有低成本、高物理强度和高透气性能的伸性纸袋纸。

Description

一种利用竹浆生产高透伸性纸袋纸的方法
【技术领域】
本发明涉及一种纸张生产方法,具体涉及一种利用竹浆生产高透伸性纸袋纸的方法。
【背景技术】
在袋装水泥包装过程中需用到纸袋纸,由于高透气伸性纸袋纸的透气度优于普通伸性纸袋纸。随着工业发展,为提高生产效率,现代水泥厂多嘴采用快速灌装设备,这要求水泥袋必须要求足够强的抗张、能量吸收性能以及更强的透气性能。快速灌装过程中大量空气进入水泥袋中,若不快速排出空气,水泥袋将被冲击破包。水泥袋制作厂家对纸袋纸进行打孔处理,增强水泥袋排气性能,但是也降低了纸袋纸的抗张、能量吸收等性能。高透气伸性纸袋纸较好的改善了透气性能,可使制袋厂对纸袋纸少打孔甚至不打孔,从而保证水泥袋保持较低破包率。
【发明内容】
本发明的目的在于提供一种利用竹浆生产高透伸性纸袋纸的方法,以解决现有水泥袋制作厂家对纸袋纸进行打孔处理,虽增强水泥袋排气性能,但是也降低了纸袋纸的抗张、能量吸收等性能的实际技术问题。
为了解决以上技术问题,本发明采用以下技术方案。
一种利用竹浆生产高透伸性纸袋纸的方法,是经浆料真空浓缩机浓缩,高浓磨浆,低浓盘磨机,流送除砂,压力筛筛浆,经飘片式流浆箱上网成型,四辊三压区的压榨,干燥,卷取,复卷,打包制成的,具体是使用竹片和针叶木片混合,然后采用硫酸盐法制浆,得浆料经洗涤、筛选后所得的浆,经高浓打浆保持纤维原来的长度,主要达到纤维分丝帚化,打浆浓度20-22%,后再经低浓打浆,打浆浓度在5.5-6.0%,打浆度控制在20-24°SR,往竹木混合浆当中添加增强淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.321%,上网pH值6.8-7.2,上网成型后干度达到16-18%,经四辊三压区压榨干度35-36%,压榨线压:一压68-70kN/m;二压88-90kN/m;三压138-140kN/m,再接着经干燥部干燥、伸性装置处理;卷取、复卷、打包,得到伸性纸袋纸。
进一步地,所述竹片和针叶木片的质量百分含量分别为15-25%、75-85%。
进一步地,所述硫酸盐法制浆包括以下步骤:将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在装锅的过程中同时加入蒸煮白液,竹木片与蒸煮液比控制在1:3-4.2,用碱量17-21%,硫化度29-35%。
进一步地,所述絮凝剂为硫酸铝,其可调节pH值,除阴离子垃圾作用。
进一步地,所述干强剂为聚丙烯酰胺,其可提高纸张强度,所述聚丙烯酰胺的分子量50-100万。
进一步地,所述助滤剂为聚丙烯酰胺,其可帮助细小纤维留着以及帮助脱水,所述聚丙烯酰胺的分子量500-800万。
进一步地,所述中性胶为烷基烯酮二聚体,其可提高纸页的抗水性。
本发明具有以下有益效果:
(1)实施例1-3制得的纸袋纸性能指标均达到乃至超过QB/T1460-1992规定的A等级伸性纸袋纸指标要求,可见本发明利用竹浆生产高透伸性纸袋纸的方法符合发明创造性中规定的显著进步要求。利用本发明的方法可以生产具有低成本、高物理强度和高透气性能的伸性纸袋纸。
(2)水泥袋制作厂家对纸袋纸进行打孔处理,不仅可以增强水泥袋排气性能,而且也可以降低纸袋纸的抗张、能量吸收等性能。高透气伸性纸袋纸较好的改善了透气性能,可使制袋厂对纸袋纸少打孔甚至不打孔,从而保证水泥袋保持较低破包率。
【具体实施方式】
为便于更好地理解本发明,通过以下实例加以说明,这些实例属于本发明的保护范围,但不限制本发明的保护范围。
在实施例中,所述的利用竹浆生产高透伸性纸袋纸的方法,是经浆料真空浓缩机浓缩,高浓磨浆,低浓盘磨机,流送除砂,压力筛筛浆,经飘片式流浆箱上网成型,四辊三压区的压榨,干燥,卷取,复卷,打包制成的,具体是使用竹片和针叶木片混合,所述竹片和针叶木片的质量百分含量分别为15-25%、75-85%,然后采用硫酸盐法制浆,所述硫酸盐法制浆包括以下步骤:将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在装锅的过程中同时加入蒸煮白液,竹木片与蒸煮液比控制在1:3-4.2,用碱量17-21%,硫化度29-35%,得浆料经洗涤、筛选后所得的浆,经高浓打浆保持纤维原来的长度,主要达到纤维分丝帚化,打浆浓度20-22%,后再经低浓打浆,打浆浓度在5.5-6.0%,打浆度控制在20-24°SR,往竹木混合浆当中添加增强淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合,所述絮凝剂为硫酸铝,所述干强剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量50-100万,所述助滤剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量500-800万,所述中性胶为烷基烯酮二聚体;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.321%,上网pH值6.8-7.2,上网成型后干度达到16-18%,经四辊三压区压榨干度35-36%,压榨线压:一压68-70kN/m;二压88-90kN/m;三压138-140kN/m,再接着经干燥部干燥;卷取、复卷、打包,得到伸性纸袋纸。
下面通过更具体实施例对本发明进行说明。
实例1
一种利用竹浆生产高透伸性纸袋纸的方法,具体如下:
使用竹片15%和针叶木片85%采用硫酸盐法制浆获得浆料进行伸性纸袋纸的抄造。
将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在进行蒸煮之前按照添加物(竹片和针叶木片)与水重量比1:3.6的比例添加蒸煮白液(NaOH碱液与纸浆洗涤后的洗涤液),用碱量20%,硫化度32%,与竹木混合片进行混合搅拌,其中竹木混合片水分占48%,液体总量为62m3;往蒸煮锅逐步添加蒸汽至设定温度,当中温度的变化过程及时间包括:通过添加蒸汽的量使温度从70℃提升到120℃,所用时间为60min;从120℃提升到130℃,所用时间为30min;从130℃提升到161℃,所用时间为60min;保温时间为30min;保温后喷放到喷放锅;经过汽蒸后的竹浆用泵送到洗浆池进行真空洗浆;经过洗浆后,进行筛浆,筛浆包括第一次筛浆与第二次筛浆,第二次筛浆用洗渣机筛洗出竹木混合浆当中包含的渣料,将渣料通过盘磨进行粉碎并进行重复洗浆与筛浆操作;最后,将所得竹木混合浆进行造纸。
使用真空浓缩机对竹木混合浆进行浓缩;浓度达到21%,首先经高浓打浆对纤维进行分丝帚化后,再经低浓打浆,打浆浓度5.5-6.0%,打浆度控制在20-24°SR;往竹木混合浆当中添加增强淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合,所述絮凝剂为硫酸铝,所述干强剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量100万,所述助滤剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量800万,所述中性胶为烷基烯酮二聚体;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.3%,上网pH值6.8-7.0;上网成型后干度达到16-18%,经四辊三压区压榨后干度达到35-36%,设置压榨线压值:一压70kN/m二压90kN/m三压140kN/m;将纸页置于上缸烘干干燥;卷取、复卷、打包,得到伸性纸袋纸。
实例2
一种利用竹浆生产高透伸性纸袋纸的方法,具体如下:
使用竹片20%和针叶木片80%采用硫酸盐法制浆获得浆料进行伸性纸袋纸的抄造。
将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在进行蒸煮之前按照添加物(竹片和针叶木片)与水重量比1:3.6的比例添加蒸煮白液(NaOH碱液与纸浆洗涤后的洗涤液),用碱量17%,硫化度34%,与竹木混合片进行混合搅拌,其中竹木混合片水分占46%,液体总量为64m3;往蒸煮锅逐步添加蒸汽至设定温度,当中温度的变化过程及时间包括:通过添加蒸汽的量使温度从70℃提升到120℃,所用时间为60min;从120℃提升到130℃,所用时间为30min;从130℃提升到161℃,所用时间为60min;保温时间为40min;保温后喷放到喷放锅;经过汽蒸后的竹浆用泵送到洗浆池进行真空洗浆;经过洗浆后,进行筛浆,筛浆包括第一次筛浆与第二次筛浆,第二次筛浆用洗渣机筛洗出竹木混合浆当中包含的渣料,将渣料通过盘磨进行粉碎并进行重复洗浆与筛浆操作;最后,将所得竹木混合浆进行造纸。
使用真空浓缩机对竹木混合浆进行浓缩;浓度达到21%,首先经高浓打浆对纤维进行分丝帚化后,再经低浓打浆,打浆浓度5.5-6.0%,打浆度控制在20-24°SR;往竹木混合浆当中添加增强淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合,所述絮凝剂为硫酸铝,所述干强剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量50万,所述助滤剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量500万,所述中性胶为烷基烯酮二聚体;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.3%,上网pH值6.8-7.0;上网成型后干度达到16-18%,经四辊三压区压榨后干度达到35-36%,设置压榨线压值:一压70kN/m二压90kN/m三压140kN/m;将纸页置于上缸烘干干燥;卷取、复卷、打包,得到伸性纸袋纸。
实例3
一种利用竹浆生产高透伸性纸袋纸的方法,具体如下:
使用竹片25%和针叶木片75%采用硫酸盐法制浆获得浆料进行伸性纸袋纸的抄造。
将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在进行蒸煮之前按照添加物(竹片和针叶木片)与水重量比1:3.6的比例添加蒸煮白液(NaOH碱液与纸浆洗涤后的洗涤液),用碱量21%,硫化度29%,与竹木混合片进行混合搅拌,其中竹木混合片水分占44%,液体总量为66m3;往蒸煮锅逐步添加蒸汽至设定温度,当中温度的变化过程及时间包括:通过添加蒸汽的量使温度从70℃提升到120℃,所用时间为60min;从120℃提升到130℃,所用时间为30min;从130℃提升到161℃,所用时间为60min;保温时间为45min;保温后喷放到喷放锅;经过汽蒸后的竹浆用泵送到洗浆池进行真空洗浆;经过洗浆后,进行筛浆,筛浆包括第一次筛浆与第二次筛浆,第二次筛浆用洗渣机筛洗出竹木混合浆当中包含的渣料,将渣料通过盘磨进行粉碎并进行重复洗浆与筛浆操作;最后,将所得竹木混合浆进行造纸。
使用真空浓缩机对竹木混合浆进行浓缩;浓度达到21%,首先经高浓打浆对纤维进行分丝帚化后,再经低浓打浆,打浆浓度5.5-6.0%,打浆度控制在20-24°SR;往竹木混合浆当中添加增强淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合,所述絮凝剂为硫酸铝,所述干强剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量90万,所述助滤剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量700万,所述中性胶为烷基烯酮二聚体;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.3%,上网pH值6.8-7.0;上网成型后干度达到16-18%,经四辊三压区压榨后干度达到35-36%,设置压榨线压值:一压70kN/m二压90kN/m三压140kN/m;将纸页置于上缸烘干干燥;卷取、复卷、打包,得到伸性纸袋纸。
对实施例1-3的纸袋纸性能进行检测,检测结果如下表所示。
Figure GDA0003013363860000051
Figure GDA0003013363860000061
由上表数据可知:实施例1-3制得的纸袋纸性能指标均达到乃至超过QB/T1460-1992规定的A等级伸性纸袋纸指标要求,可见本发明利用竹浆生产高透伸性纸袋纸的方法符合发明创造性中规定的显著进步要求。利用本发明的方法可以生产具有低成本、高物理强度和高透气性能的伸性纸袋纸。
以上内容不能认定本发明具体实施只局限于这些说明,对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思前提下,还可以做出若干简单推演或替换,都应当视为属于本发明由所提交的权利要求书确定的专利保护范围。

Claims (6)

1.一种利用竹浆生产高透伸性纸袋纸的方法,是经浆料真空浓缩机浓缩,高浓磨浆,低浓盘磨机,流送除砂,压力筛筛浆,经飘片式流浆箱上网成型,四辊三压区的压榨,干燥,卷取,复卷,打包制成的,其特征在于:使用竹片和针叶木片混合,然后采用硫酸盐法制浆,得浆料经洗涤、筛选后所得的浆,经高浓打浆保持纤维原来的长度,主要达到纤维分丝帚化,打浆浓度20-22%,后再经低浓打浆,打浆浓度在5.5-6.0%,打浆度控制在20-24°SR,往竹木混合浆当中添加淀粉、絮凝剂、干强剂、助滤剂、中性胶进行均匀混合;然后,使用压力筛进行筛浆,分离杂质;经飘片式流浆箱上网成型,设置上网浓度0.28-0.321%,上网pH值6.8-7.2,上网成型后干度达到16-18%,经四辊三压区压榨干度35-36%,压榨线压:一压68-70kN/m;二压88-90kN/m;三压138-140kN/m,再接着经干燥部干燥、伸性装置处理;卷取、复卷、打包,得到伸性纸袋纸;
所述硫酸盐法制浆包括以下步骤:将竹片和针叶木片按比例混合均匀后,使用装锅皮带送入110m3的立式蒸煮锅,在装锅的过程中同时加入蒸煮白液,竹木片与蒸煮液比控制在1:3-4.2,用碱量17-21%,硫化度29-35%。
2.根据权利要求1所述的利用竹浆生产高透伸性纸袋纸的方法,其特征在于,所述竹片和针叶木片的质量百分含量分别为15-25%、75-85%。
3.根据权利要求1所述的利用竹浆生产高透伸性纸袋纸的方法,其特征在于,所述絮凝剂为硫酸铝。
4.根据权利要求1所述的利用竹浆生产高透伸性纸袋纸的方法,其特征在于,所述干强剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量50-100万。
5.根据权利要求1所述的利用竹浆生产高透伸性纸袋纸的方法,其特征在于,所述助滤剂为聚丙烯酰胺,所述聚丙烯酰胺的分子量500-800万。
6.根据权利要求1所述的利用竹浆生产高透伸性纸袋纸的方法,其特征在于,所述中性胶为烷基烯酮二聚体。
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