CN106120459A - 一种超低定量疏水性薄页纸的制备方法 - Google Patents
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Abstract
本发明涉及造纸领域,提供一种超低定量疏水性薄页纸的制备方法,解决采用现有技术的方法制得的低定量薄页纸强度较低、疏水效果差、无阻燃性能的缺陷,所述超低定量疏水薄页纸为10g/m2的薄页纸,包括以下处理步骤:(1)制浆:针叶木浆经碎浆机碎解后进行打浆,脱墨废纸浆单独进行打浆;将上述两种浆料按1:4的重量比和浆,调整浓度,并加入瓜尔胶、阳离子淀粉、羧甲基纤维素,制得混合浆;所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.2~1.5%;(2)在混合浆中加入混合浆总重1~2%的经过活化的海泡石;(3)将步骤(1)和步骤(2)制得的浆料混合,再加入浆料重1.0~1.5%的石蜡。
Description
技术领域
本发明涉及造纸领域,尤其涉及一种超低定量疏水性薄页纸的制备方法。
背景技术
在人们需求日益增加的情况下,薄页纸的用途也越来越广泛,有卫生纸、薄页包装纸、邮封纸、薄页有光纸、蜡纸原纸、纸绳原纸、花样纸原纸、***册薄页纸和皱纹纸等,其中一些用途需要薄页纸具有柔韧性和耐久性,有的需要薄页纸具有吸水性,而有的则需要薄页纸具有疏水性。如薄页包装纸、***册薄页纸,一旦浸水,一些重要的文件就会损毁,因此需要采取防水措施。
超低定量生活用纸由于定量比较低,起皱时,纸张的强度会损失很多,容易造成断纸。纸张一般都是从两边断开,从而导致整个纸幅断开,引纸期间会浪费很多的浆料和能耗,降低纸机的运行效率。
现有的生产低定量薄页纸 ( 以14g/m2 纸为例 )的工艺如下 :(1) 制浆:根据配比将针叶木浆和废纸脱墨浆一起放入碎浆机中碎解混合,然后一起进行打浆,打浆后进行调整浓度,通过调节箱进入造纸流送***。 (2) 造纸:将制浆用料通过冲浆池稀释和网前箱的均匀分散,以一定的速度流到造纸网上,然后经过压榨、烘干、卷取,最后经分切、打包入库。现有的低定量薄页纸通常为了保持木浆纤维长度采用20%的针叶木浆和 80%的脱墨废纸浆混合打浆的方式,这样纤维的匀整性和纸张的匀度以及强度指标无法得到保证。且现有的低定量薄页纸由于纸张较薄采用传统的工艺制作强度较低、疏水效果较差且无阻燃性能。
另外,现有的低定量薄页纸通常只能做到12g m2,更低定量的纸张制得的强度无法达到行业规定标准的要求。
发明内容
因此,针对以上内容,本发明提供一种超低定量疏水性薄页纸的制备方法,解决采用现有技术的方法制得的低定量薄页纸强度较低、疏水效果差、无阻燃性能的缺陷。
为达到上述目的,本发明是通过以下技术方案实现的:一种超低定量疏水薄页纸的制备方法,所述超低定量疏水薄页纸为10g/m2的薄页纸,包括以下处理步骤:(1)制浆:针叶木浆经碎浆机碎解后进行打浆,脱墨废纸浆单独进行打浆;将上述两种浆料按1:4的重量比和浆,调整浓度,并加入瓜尔胶、阳离子淀粉、羧甲基纤维素,制得混合浆;所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.5~0.6:1:0.3~0.4,所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.2~1.5%;(2)在混合浆中加入混合浆总重1~2%的经过活化的海泡石,所述海泡石的活化方法为:将海泡石泡在水中,取海泡石20%重的玻璃纤维,对玻璃纤维进行切断与疏解,再在玻璃纤维中加入预先泡过水的海泡石,海泡石打浆度控制在75~80°SR,玻璃纤维打浆度控制在30~35°SR;(3)将步骤(1)和步骤(2)制得的浆料混合,再加入浆料重1.0~1.5%的石蜡。
进一步的改进是:所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.6:1:0.4。
进一步的改进是:所述瓜尔胶、阳离子淀粉、羧甲基纤维素的总用量为针叶木浆与脱墨废纸浆总重的1.3%。
进一步的改进是:步骤(2)中海泡石加入量为混合浆总重的1.5%。
通过采用前述技术方案,本发明的有益效果是:本发明的超低定量疏水薄页纸的制备方法,所述超低定量疏水薄页纸为10g/m2的薄页纸,在制浆的过程中添加瓜尔胶、阳离子淀粉及羧甲基纤维素,与纸浆混合均匀,提高制得的薄页纸的强度,且所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.5~0.6:1:0.3~0.4,所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.2~1.5%,添加量过少则达不到所需的强度,添加量超过1.5%则制得纸厚度过大达不到薄页纸的标准;在混合浆中加入混合浆总重1~2%的经过活化的海泡石,海泡石经过活化后添加到纸浆中使得制得的纸具有较好的阻燃效果,采用本发明的活化方法,即将海泡石泡在水中,取海泡石20%重的玻璃纤维,对玻璃纤维进行切断与疏解,再在玻璃纤维中加入预先泡过水的海泡石,海泡石打浆度控制在75~80°SR,玻璃纤维打浆度控制在30~35°SR,可海泡石的结构不被破坏,与传统的未经活化或者加工处理时不仔细的海泡石相比,本发明的海泡石能发挥较好的作用,且由于经过活化的海泡石具有非常细密的孔,表面积极大,可吸附纸浆中的其他物质组分;再者,在浆料中添加石蜡可发挥疏水作用,石蜡与海泡石及瓜尔胶、阳离子淀粉、羧甲基纤维素混合在一起,充分反应,使得最后制得的薄页纸强度较高、疏水效果好、且定量可达10g/m2。
具体实施方式
以下将结合具体实施例来详细说明本发明的实施方式,借此对本发明如何应用技术手段来解决技术问题,并达成技术效果的实现过程能充分理解并据以实施。
若未特别指明,实施例中所采用的技术手段为本领域技术人员所熟知的常规手段,所采用的试剂和产品也均为可商业获得的。所用试剂的来源、商品名以及有必要列出其组成成分者,均在首次出现时标明。
本发明的实施例为:
一种超低定量疏水薄页纸的制备方法,所述超低定量疏水薄页纸为10g/m2的薄页纸,包括以下处理步骤:(1)制浆:针叶木浆经碎浆机碎解后进行打浆,脱墨废纸浆单独进行打浆;将上述两种浆料按1:4的重量比和浆,调整浓度,并加入瓜尔胶、阳离子淀粉、羧甲基纤维素,制得混合浆;所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.6:1:0.4,所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.3%;(2)在混合浆中加入混合浆总重1.5%的经过活化的海泡石,所述海泡石的活化方法为:将海泡石泡在水中,取海泡石20%重的玻璃纤维,对玻璃纤维进行切断与疏解,再在玻璃纤维中加入预先泡过水的海泡石,海泡石打浆度控制在78°SR,玻璃纤维打浆度控制在32°SR;(3)将步骤(1)和步骤(2)制得的浆料混合,再加入浆料重1.3%的石蜡。
其中,本发明的瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.5~0.6:1:0.3~0.4,所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.2~1.5%;混合浆中加入混合浆总重1~2%的经过活化的海泡石,海泡石打浆度控制在75~80°SR,玻璃纤维打浆度控制在30~35°SR;石蜡加入量为浆料重1.0~1.5%,在以上参数范围内均可实现本发明的目的。
以上所记载,仅为利用本创作技术内容的实施例,任何熟悉本项技艺者运用本创作所做的修饰、变化,皆属本创作主张的专利范围,而不限于实施例所揭示者。
Claims (4)
1.一种超低定量疏水薄页纸的制备方法,其特征在于:所述超低定量疏水薄页纸为10g/m2的薄页纸,包括以下处理步骤:(1)制浆:针叶木浆经碎浆机碎解后进行打浆,脱墨废纸浆单独进行打浆;将上述两种浆料按1:4的重量比和浆,调整浓度,并加入瓜尔胶、阳离子淀粉、羧甲基纤维素,制得混合浆;所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.5~0.6:1:0.3~0.4,所述瓜尔胶、阳离子淀粉及羧甲基纤维素的总用量为浆量总重的1.2~1.5%;(2)在混合浆中加入混合浆总重1~2%的经过活化的海泡石,所述海泡石的活化方法为:将海泡石泡在水中,取海泡石20%重的玻璃纤维,对玻璃纤维进行切断与疏解,再在玻璃纤维中加入预先泡过水的海泡石,海泡石打浆度控制在75~80°SR,玻璃纤维打浆度控制在30~35°SR;(3)将步骤(1)和步骤(2)制得的浆料混合,再加入浆料重1.0~1.5%的石蜡。
2.根据权利要求1所述的超低定量疏水薄页纸的制备方法,其特征在于:所述瓜尔胶、阳离子淀粉、羧甲基纤维素的重量比例为0.6:1:0.4。
3.根据权利要求1或2所述的超低定量疏水薄页纸的制备方法,其特征在于:所述瓜尔胶、阳离子淀粉、羧甲基纤维素的总用量为针叶木浆与脱墨废纸浆总重的1.3%。
4.根据权利要求3所述的超低定量疏水薄页纸的制备方法,其特征在于:步骤(2)中海泡石加入量为混合浆总重的1.5%。
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CN109056420A (zh) * | 2018-07-12 | 2018-12-21 | 福建省晋江优兰发纸业有限公司 | 一种脱墨浆果袋纸的制备方法 |
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