CN103588995B - 淀粉环保纸及其制备方法 - Google Patents
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Abstract
本发明公开本发明提供了一种环保淀粉纸,包括上层聚乳酸聚合物原料、中层造纸母粒和下层聚乳酸聚合物原料的三层复合结构,所述三层的厚度比例为1:8:1,所述造纸母粒包括如下质量百分比的组分:淀粉原料30%;聚乳酸聚合物原料20%;碳酸钙原料50%。本发明提供一种采用不砍树、不用石化产品、不制造空污、不产生污水,而是利用年年可再生产的植物原料和取之不断的碳酸钙和天然助剂,经聚合后再用专用生产设备所生产出来的淀粉环保纸及其制备方法,采用该方法所生产出来的淀粉环保纸是一种天然无毒,无重金属,无塑化剂,可100%为生物可分解的环保材料,可供应各行各业所用,而达到既环保又不浪费资源的目的。
Description
技术领域
本发明涉及一种造纸技术,尤其是一种淀粉环保纸。
背景技术
现有的造纸技术中,造纸的原料主要是植物纤维,如木材、稻草、麦草、玉米杆、甘蔗渣、芦苇、麻、竹等。纸的生产大体上可分为两个过程,即制浆和造纸。1、制浆:在原料中国入一些化学药品(如石灰或烧碱等)进行蒸煮;或者将原料直接用机械打碎、研磨;然后洗涤,去除不必要成分,保留纤维,制成浆料。需要漂白的,再加入药剂进行漂白。2、造纸:把浆料用网格或捞起,脱水压榨干燥,最后整理成纸。
因此,传统的造纸工业是一个产量大、用水多、污染严重的轻工业。如:造纸工业中的废水若未经不效处理而排入江河中,废水中的有机物质发酵、氧化、分解,消耗水是的氧气,使鱼类、贝类等水生生物缺氧致死;一些细小的纤维悬浮在水中,容易堵塞鱼鳃,也造成鱼类死亡;废水中的树皮屑、木屑、草屑、腐草、腐浆等沉入水底,淤塞河床,在缓慢发酵中,不断产生毒臭气;废水中还有一些不容易发酵、分解的物质,悬浮在水中,吸收光线,减少阳光透入河水,妨碍水生植物的光合作用;另外还会带有一些致癌、致畸、致突变的有毒有害物质。另外,造纸工业排放的一些固体废物如腐烂浆料,浆渣、树皮、碎木片、草根、煤灰渣等,占用场地,发酵变质,放出臭气,下雨时,还流出有毒臭水,污染地面水和地下水源。同时,在造纸的生产过程中锅炉燃煤产生的废气和烟尘及机械的噪声也影响工作人员和附近居民健康。
发明内容
本发明的目的在于提供一种采用不砍树、不用石化产品、不制造空污、不产生污水,而是利用年年可再生产的植物原料和取之不断的碳酸钙和天然助剂,经聚合后再用专用生产设备所生产出来的淀粉环保纸及其制备方法,采用该方法所生产出来的淀粉环保纸是一种天然无毒,无重金属,无塑化剂,可100%为生物可分解的环保材料,可供应各行各业所用,而达到既环保又不浪费资源的目的。
本发明提供了一种环保淀粉纸,其特征在于:包括上层聚乳酸聚合物原料、中层造纸母粒和下层聚乳酸聚合物原料的三层复合结构,所述三层的厚度比例为1:8:1,所述造纸母粒包括如下质量百分比的组分:
淀粉原料:30%;
聚乳酸聚合物原料:20%;
碳酸钙原料:50%。
所述淀粉环保纸的制备方法如下:
步骤一、将颗粒状的淀粉原料加上制好的聚乳酸聚合物原料和碳酸钙原料按质量比为30%:20%:50%的比例放入密炼机中,以130摄氏度的高温,经90分钟密炼制造成为造纸母粒;
步骤二、将造纸母粒用三层共挤的方式进入流延机,其中上、下层用聚乳酸聚合物原料做覆盖膜层,中层用大量的造纸母粒同时进入流延机,上层聚乳酸聚合物原料、中层造纸母粒和下层聚乳酸聚合物原料的厚度比例为1:8:1,再以180度的温度流延成膜状,然后经半冷却后再由数十支滚轮做渐进式直向拉伸,而后再进入大排式烘箱,以80~110摄氏度的温度,慢慢做横向拉伸,出来后再进入数十支滚轮做连绩式冷却和定型、压平,制成为圆卷式的环保纸;
步骤三、将做好的环保纸张再进入静电消除机,将存在于纸张内之静电除去,得到所需的环保淀粉纸。
所述淀粉原料的制法如下:将工业用淀粉加入甘油后,经120~160摄氏度高温蒸煮、以加热方式催化,再冷却后,再进入密炼机后,在110摄氏度的温度下密炼一小时后再制成颗粒,经冷却后得到颗粒状的淀粉原料;其中工业用淀粉与甘油的配比按质量比为:工业用淀粉占90%,甘油占10%。
上述的淀粉原料有助于将来制成纸张时,在使用后达到快速裂解与生物分解的特殊功能。
所述聚乳酸聚合物原料的制法如下:
(1)将聚乳酸与添加剂按质量比1:0.05~0.3的比例加入反应槽混合后进行改质,其中添加剂的组分为:甘油、聚乳酸甘醇酸和甘草提取液,其配比按质量比为7:2:1;
(2)将改质后的聚乳酸与填充料混合搅匀,再经造粒机造出完全生物降解的聚乳酸聚合物颗粒,所述聚乳酸与填充料的配比按质量比为:聚乳酸占40~80%,填充料占20~60%。
所述填充料的具体成分及配比按质量比如下:
上述的聚乳酸聚合物原料取作为本发明的制造环保纸技术的主要原料之一,所述聚乳酸在通过甘油酯把聚乳酸之高分子结构将之断链后,将其分子结构调至所需的分子量后,再将之结链,如此即可成为造纸所需的原料。本原料在环保淀粉纸的制造过程能使其更有延展、拉伸之功能和达到生物分解之功效。
所述碳酸钙原料制法如下:首先,将碳酸钙磨成细度为800目~1000目后,加入天然色拉油、聚乳酸、和硬脂酸滑剂后,放入密炼机中用150摄氏度的高温加以密炼,而后再入螺杵机制成颗粒状的碳酸钙原料;其中各原料的用量按质量比为:碳酸钙用量为82%,天然色拉油5%,聚乳酸10%,硬脂酸滑剂3%。
上述碳酸钙原料的功效是能使本产品在制成纸张后,更好书写并取得更好的手感。
与现有的普通纸张相比,本发明所制备的环保淀粉纸中,由于上下有薄层的聚乳酸,相当于一般的纸杯中的淋膜(传统的淋膜为一层PE材质),具有与淋膜相同的功能;本产品做成水杯后一样不漏水,其淋膜部份,我们的环保纸却没有使用塑料的问题,也就是说没有塑化剂的问题。同时,由于本专利所述的环保纸张,经双轴拉伸后,功能在于比重减轻、密度减低,和原本纸浆制成纸的密度、比重不相上下,但本产品用于书写时,不但有原木纸浆做成的手感,将环保纸书写后,浸泡水中然后擦干,其字体不但不会被水所侵蚀和溶解,及模糊不清;铅笔书写时,橡皮擦也可擦掉。另外,本专利所述的环保纸张产品在使用中,如遇有水(如水杯),油(如汉堡盒、薯条纸袋),不需再做任何液体的纸张,所以在使用时不会有任何毒素,重金属及塑化剂的产生,是一种真正的环保纸张。
具体实施方式
下面通过具体的实施例来进一步介绍本发明所述的环保淀粉纸。
一、原料的取得与用法:
(一)淀粉原料:
首先,淀粉是采用工业用淀粉(按质量比占90%)加入甘油(按质量比占10%)后高温(120度~160度)蒸煮、催化(不加催化剂,以加热方式催化),再冷却后,再进入密炼机后,在110度的温度下密炼一小时后再制成颗粒,经冷却后再等下一阶段。此材料有助于将来制成纸张时,在使用后达到快速裂解与生物分解的特殊功能。
(二)聚乳酸聚合物原料:用甘油酯把聚乳酸之高分子结构将之断链后,将其分子结构调至所需的分子量后,再将之结链,即可成为所需的原料。本原料在产品之制造过程能使其更有延展、拉伸之功能和达到生物分解之功效。
所述聚乳酸聚合物原料制法如下:
(1)将聚乳酸与添加剂按质量比1:0.05~0.3的比例加入反应槽混合后进行改质,其中添加剂的组分为:甘油、聚乳酸甘醇酸和甘草提取液,其配比按质量比为7:2:1;
(2)将改质后的聚乳酸与填充料混合搅匀,再经造粒机造出完全生物降解的聚乳酸聚合物颗粒,所述聚乳酸与填充料的配比按质量比为:聚乳酸占40~80%,填充料占20~60%;
所述填充料的具体成分及配比按质量比如下:
(三)碳酸钙原料:为无机物,既无毒、再无重金属、无塑化剂的天然矿物质,使用后回归自然大地。此材料之功效能使本产品在制成纸张后,更好书写并取得更好的手感。
其制法如下:首先,碳酸钙(按质量比用量为82%)磨成所需的细度(800目~1000目),加入天然色拉油(按质量比用量为5%)和少许的聚乳酸(按质量比用量为10%)和硬脂酸滑剂(按质量比用量为3%)后,放入密炼机中用150度的高温加以密练,而后再入螺杵机制成颗粒备用。
二、所述环保淀粉纸的制备方法:
步骤一、用制成颗粒之淀粉原料(按质量比用量为30%)加上制好的聚乳酸聚合物原料(按质量比用量为20%)和碳酸钙原料(按质量比用量为50%),视产品所需用一定比例放入密练机中,以130度之高温,经90分钟密练制造成为造纸母粒。
步骤二.将做好的母粒,用三层共挤的双螺杵为基础之流延机械;上、下层用纯制好的聚乳酸聚合物原料做覆盖膜层(上下两层纯聚乳酸类似淋膜机做法,淋膜在中层的造纸母粒上形成覆盖保护膜),中层用大量的造纸母粒(上层聚乳酸聚合物原料、中层造纸母粒、下层聚乳酸聚合物原料,厚度比例为1:8:1),同时进入螺杵机,以180度的温度流延成膜状,然后经半冷却后再由数十支滚轮做渐进式直向拉伸,而后再进入大排式烘箱,以80~110度的温度,慢慢做横向拉伸,出来后再进入数十支滚轮做连绩式冷却和定型、压平,成为圆卷式的环保纸。其厚度可根据要用的纸张用途,再拉伸中做控制。其密度、重量也会因经过这些机器的双轴拉伸后,将和一般纸用的厚度及密度与克重不相上下。
步骤三.将做好的环保纸张再进入另一部机器(静电消除机),此机器的用途,是将把存在于纸张内之静电除去,以便后续使用之印刷、染色时不受静电影向,至此环保纸张已制造完成。
Claims (4)
1.一种环保淀粉纸,其特征在于:包括上层聚乳酸聚合物原料、中层造纸母粒和下层聚乳酸聚合物原料的三层复合结构,所述三层的厚度比例为1:8:1,所述造纸母粒包括如下质量百分比的组分:
淀粉原料:30%;
聚乳酸聚合物原料:20%;
碳酸钙原料:50%;
所述淀粉原料其中各原料的用量按质量比为:
工业用淀粉占90%,甘油占10%;
所述碳酸钙原料其中各原料的用量按质量比为:
碳酸钙用量为82%,天然色拉油5%,聚乳酸10%,硬脂酸润滑剂3%;
所述聚乳酸聚合物原料的制法如下:
(1)将聚乳酸与添加剂按质量比1:0.05~0.3的比例加入反应槽混合后进行改质,其中添加剂的组分为:甘油、聚乳酸甘醇酸和甘草提取液,其配比按质量比为7:2:1;
(2)将改质后的聚乳酸与填充料混合搅匀,再经造粒机造出完全生物降解的聚乳酸聚合物颗粒,所述聚乳酸与填充料的配比按质量比为:聚乳酸占40~80%,填充料占20~60%;
所述填充料的具体成分及配比按质量比如下:
直链淀粉40~55%;
碳酸钙、云母粉或高岭土40~55%;
甘油0.75~3%;
乙二醇0.75~3%;
环氧大豆油2~8%;
山梨酸1~4%;
尿素0.25~1%;
偶联剂0.01~0.015%;
甲壳素0.01%;
枯草菌0.01%。
2.一种如权利要求1所述的环保淀粉纸的制备方法,其特征在于:所述制备方法如下:
步骤一、将颗粒状的淀粉原料加上制好的聚乳酸聚合物原料和碳酸钙原料按质量比为30%:20%:50%的比例放入密炼机中,以130摄氏度的高温,经90分钟密炼制造成为造纸母粒;
步骤二、将造纸母粒用三层共挤的方式进入流延机,其中上、下层用聚乳酸聚合物原料做覆盖膜层,中层用大量的造纸母粒同时进入流延机,上层聚乳酸、中层造纸母粒和下层聚乳酸的厚度比例为1:8:1;再以180摄氏度的温度流延成膜状,然后经半冷却后再由数十支滚轮做渐进式直向拉伸,而后再进入大排式烘箱,以80~110摄氏度的温度,慢慢做横向拉伸,出来后再进入数十支滚轮做连绩式冷却和定型、压平,制成为圆卷式的环保纸;
步骤三、将做好的环保纸张再进入静电消除机,将存在于纸张内的静电除去,得到所需的环保淀粉纸。
3.根据权利要求2所述的环保淀粉纸的制备方法,其特征在于:所述淀粉原料的制法如下:将工业用淀粉加入甘油后,经120~160摄氏度高温蒸煮、以加热方式催化,再冷却后,再进入密炼机后,在110摄氏度的温度下密炼一小时后再制成颗粒,经冷却后得到颗粒状的淀粉原料;其中工业用淀粉与甘油的配比按质量比为:工业用淀粉占90%,甘油占10%。
4.根据权利要求2所述的环保淀粉纸的制备方法,其特征在于:所述碳酸钙原料制法如下:首先,将碳酸钙磨成细度为800目~1000目后,加入天然色拉油、聚乳酸、和硬脂酸润滑剂后,放入密炼机中用150摄氏度的高温加以密炼,而后再入螺杵机制成颗粒状的碳酸钙原料;其中各原料的用量按质量比为:碳酸钙用量为82%,天然色拉油5%,聚乳酸10%,硬脂酸滑剂3%。
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