CN106808771B - 一种清洁剂包装复合膜及其制备方法 - Google Patents

一种清洁剂包装复合膜及其制备方法 Download PDF

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CN106808771B
CN106808771B CN201710052450.9A CN201710052450A CN106808771B CN 106808771 B CN106808771 B CN 106808771B CN 201710052450 A CN201710052450 A CN 201710052450A CN 106808771 B CN106808771 B CN 106808771B
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layer
adhesive layer
substrate layer
composite membrane
substrate
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刘杏辰
张雪芳
赵宁
张艳清
李策
刘策
刘常青
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Hebei Beiren New Materials Technology Co ltd
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XINGTAI BEIREN PACKAGING Co Ltd
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Abstract

本发明涉及包装复合膜，尤其涉及一种清洁剂包装复合膜及其制备方法。其依次包括：第一尼龙层、第一粘合层、第一基材层、第二粘合层、第二尼龙层、第三粘合层、第二基材层、第三基材层和第四基材层，其中，所述第一尼龙层和第二尼龙层的材料包括PA，所述第一粘合层、第二粘合层和第三粘合层的材料包括TIE和PE的混合物，所述第一基材层和第二基材层的材料为HDPE和LLDPE的混合物，所述第三基材层和第四基材层的材料包括HDPE、LLDPE和MPE的混合物。本发明通过对原料进行预处理以及多层膜的复合，使材料的防腐是耐老化性能大幅提高，各项指标均远远高于国家标准。

Description

一种清洁剂包装复合膜及其制备方法
技术领域
本发明涉及包装复合膜，尤其涉及一种清洁剂包装复合膜及其制备方法。
背景技术
聚乙烯是结构最简单的高分子有机化合物，当今世界应用最广泛的高分子材料之一。聚乙烯由乙烯聚合而成，可制成各种各样应用材料。聚乙烯也是包装材料的主要材料。其作为包装材料具有以下优点：聚乙烯抗多种有机溶剂、抗多种酸碱腐蚀，但是不抗氧化性酸，例如硝酸；结晶料，吸湿小，不须充分干燥。但也存在一些缺点，收缩范围和收缩值大，方向性明显，易变形翘曲。
聚乙烯根据密度的不同可分为高密度聚乙烯、中密度聚乙烯和低密度聚乙烯。其中，高密度聚乙烯具有刚性、硬度和机械强度大，低温抗冲击性能好，抗应力开裂性好，耐磨性好，耐老化的特性。高密度聚乙烯树脂价格低廉、加工性能优异，物理及化学性能俱佳，同时对水等极性溶剂具有良好的阻隔性，因此被广泛用于包装材料。
随着人们对商品包装要求的不断提高，新包装材料的开发也越来越重要，在包装膜领域，对膜的强度和功能性要求也越来越高。市场上用于清除重油等顽固污渍的清洁剂具有一定腐蚀性和渗透性，一般采用硬质包装容器承装。硬质包装容器成本高、浪费社会资源，软包装成本低，但是抗腐蚀性达不到。此项功能膜采用特殊材料和工艺生产，突破了这一难题，实现了清洁剂包装的软化，降低企业成本、减少社会资源浪费。
发明内容
本发明的目的在于提供一种清洁剂包装复合膜及其制备方法，解决现有的包装膜容易被腐蚀、容易发生泄露等问题。
为解决上述问题，本发明所采取的技术方案是：
一种清洁剂包装复合膜，依次包括：第一尼龙层、第一粘合层、第一基材层、第二粘合层、第二尼龙层、第三粘合层、第二基材层、第三基材层和第四基材层，其中，所述第一尼龙层和第二尼龙层的材料包括PA(聚酰胺)，所述第一粘合层、第二粘合层和第三粘合层的材料包括TIE和PE(聚乙烯)的混合物，所述第一基材层和第二基材层的材料为HDPE(高密度聚乙烯)和LLDPE(线型低密度聚乙烯)的混合物，所述第三基材层和第四基材层的材料包括HDPE、LLDPE和MPE(茂金属聚乙烯)的混合物。其中，TIE为粘合树脂，可商购得到，如陶氏、杜邦、三井等公司均有生产销售。
进一步地，所述第一粘合层、第二粘合层和第三粘合层的材料中TIE与PE的质量比为1∶2。
进一步地，所述第一基材层和第二基材层的材料中HDPE和LLDPE的质量比为1∶3。
进一步地，所述第三基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶3；所述第四基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶4。
一种上述复合膜的制备方法，其包括以下步骤：(1)将PA用质量浓度为2-3％的2-羟基-4-甲氧基二苯甲酮的甲醇溶液浸泡5-10小时，然后于60-80℃干燥12-18小时，备用；(2)将MPE用质量浓度为2-3％的氟硅烷的甲醇溶液中浸泡8-25小时，再将其于50-100℃干燥1-5小时，备用；(3)将各层原料按比例配料，分别加入各层挤出机进行熔融塑化、挤出，然后在吹胀比为1∶1.5-2，模头温度为220-230℃的条件下进行共挤吹膜，制得复合膜。
进一步地，各层挤出机的温度分别为：第一尼龙层和第二尼龙层的塑化温度为120-180℃，第一粘合层、第二粘合层和第三粘合层的塑化温度为150-200℃，第一基材层和第二基材层的塑化温度为160-180℃，第三基材层和第四基材层的塑化温度为190-210℃。
此外，生产此产品时室内为必须在25℃以上，湿度在30以上在这样的条件下才可以加工此产品。
采用上述技术方案所产生的有益效果在于：
1、本发明提供的方法制备得到的复合材料具有优良的防腐、防渗和耐老化性能，使清洁剂产品在生产加工，运输，贮存和使用过程中不受污染，腐蚀，从而提高产品的质量及市场竞争力。
2、本发明通过对原料进行预处理以及多层膜的复合，对MPE的预处理使材料的防腐防渗性能大大改善，对PA的预处理使材料的耐老化性能大幅提高，各项指标均远远高于国家标准。
附图说明
图1是本发明复合膜的层结构示意图。
图中，1第一尼龙层，2第一粘合层，3第一基材层，4第二粘合层，5第二尼龙层，6第三粘合层，7第二基材层，8第三基材层，9第四基材层。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图1及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例1
一种清洁剂包装复合膜，依次包括：第一尼龙层、第一粘合层、第一基材层、第二粘合层、第二尼龙层、第三粘合层、第二基材层、第三基材层和第四基材层，其中，所述第一尼龙层和第二尼龙层的材料包括PA，所述第一粘合层、第二粘合层和第三粘合层的材料包括TIE和PE的混合物，TIE与PE的质量比为1∶2，所述第一基材层和第二基材层的材料为HDPE和LLDPE的混合物，HDPE和LLDPE的质量比为1∶3，所述第三基材层和第四基材层的材料包括HDPE、LLDPE和MPE的混合物，所述第三基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶3；所述第四基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶4。
上述复合膜的制备方法为：(1)将PA用质量浓度为2％的2-羟基-4-甲氧基二苯甲酮的甲醇溶液浸泡10小时，然后于60℃干燥18小时，备用；(2)将MPE用质量浓度为2％的氟硅烷的甲醇溶液中浸泡25小时，再将其于50℃干燥5小时，备用；(3)将各层原料按比例配料，分别加入各层挤出机进行熔融塑化、挤出，然后在吹胀比为1∶1.5，模头温度为230℃的条件下进行共挤吹膜，制得复合膜；其中，各层挤出机的温度分别为：第一尼龙层和第二尼龙层的塑化温度为120℃，第一粘合层、第二粘合层和第三粘合层的塑化温度为200℃，第一基材层和第二基材层的塑化温度为160℃，第三基材层和第四基材层的塑化温度为210℃。
实施例2
复合膜的层结构以及各层材料组成同实施例1。
其制备方法为：(1)将PA用质量浓度为3％的2-羟基-4-甲氧基二苯甲酮的甲醇溶液浸泡5小时，然后于80℃干燥128小时，备用；(2)将MPE用质量浓度为3％的氟硅烷的甲醇溶液中浸泡8小时，再将其于100℃干燥1小时，备用；(3)将各层原料按比例配料，分别加入各层挤出机进行熔融塑化、挤出，然后在吹胀比为1∶2，模头温度为220℃的条件下进行共挤吹膜，制得复合膜；其中，各层挤出机的温度分别为：第一尼龙层和第二尼龙层的塑化温度为180℃，第一粘合层、第二粘合层和第三粘合层的塑化温度为150℃，第一基材层和第二基材层的塑化温度为180℃，第三基材层和第四基材层的塑化温度为190℃。
实施例3
复合膜的层结构以及各层材料组成同实施例1。
其制备方法为：(1)将PA用质量浓度为2.5％的2-羟基-4-甲氧基二苯甲酮的甲醇溶液浸泡8小时，然后于70℃干燥16小时，备用；(2)将MPE用质量浓度为2.5％的氟硅烷的甲醇溶液中浸泡20小时，再将其于80℃干燥4小时，备用；(3)将各层原料按比例配料，分别加入各层挤出机进行熔融塑化、挤出，然后在吹胀比为1∶1.8，模头温度为225℃的条件下进行共挤吹膜，制得复合膜；其中，各层挤出机的温度分别为：第一尼龙层和第二尼龙层的塑化温度为150℃，第一粘合层、第二粘合层和第三粘合层的塑化温度为180℃，第一基材层和第二基材层的塑化温度为170℃，第三基材层和第四基材层的塑化温度为200℃。
对比例1
复合膜的层结构以及各层材料组成同实施例1。
其制备方法为：不经过步骤(1)和步骤(2)原料预处理步骤，直接进行步骤(3)，各个参数同实施例3。
以下是实施例1-3和对比例1所得复合膜的机械物理性能检测结果。
表1
从上表可以看出，本发明实施例所得产品与对比例相比，拉伸强度、断裂伸长率、落镖冲击强度均明显优于对比例。
尽管这里参照本发明的多个解释性实施例对本发明进行了描述，但是，应该理解，本领域技术人员可以设计出很多其他的修改和实施方式，这些修改和实施方式将落在本申请公开的原则范围和精神之内。更具体地说，在本申请公开、附图和权利要求的范围内，可以对主题组合布局的组成部件和/或布局进行多种变型和改进。除了对组成部件和/或布局进行的变形和改进外，对于本领域技术人员来说，其他的用途也将是明显的。

Claims (5)

1.一种清洁剂包装复合膜，其特征在于依次包括：第一尼龙层、第一粘合层、第一基材层、第二粘合层、第二尼龙层、第三粘合层、第二基材层、第三基材层和第四基材层，其中，所述第一尼龙层和第二尼龙层的材料包括PA，所述第一粘合层、第二粘合层和第三粘合层的材料包括TIE和PE的混合物，所述第一基材层和第二基材层的材料为HDPE和LLDPE的混合物，所述第三基材层和第四基材层的材料包括HDPE、LLDPE和MPE的混合物；
所述复合膜的制备方法，包括以下步骤：(1)将PA用质量浓度为2-3％的2-羟基-4-甲氧基二苯甲酮的甲醇溶液浸泡5-10小时，然后于60-80℃干燥12-18小时，备用；(2)将MPE用质量浓度为2-3％的氟硅烷的甲醇溶液中浸泡8-25小时，再将其于50-100℃干燥1-5小时，备用；(3)将各层原料按比例配料，分别加入各层挤出机进行熔融塑化、挤出，然后在吹胀比为1∶1.5-2，模头温度为230-250℃的条件下进行共挤吹膜，制得复合膜。
2.根据权利要求1所述的复合膜，其特征在于：所述第一粘合层、第二粘合层和第三粘合层的材料中TIE与PE的质量比为1∶2。
3.根据权利要求1所述的复合膜，其特征在于：所述第一基材层和第二基材层的材料中HDPE和LLDPE的质量比为1∶3。
4.根据权利要求1所述的复合膜，其特征在于：所述第三基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶3；所述第四基材层的材料中HDPE、LLDPE和MPE的质量比为1∶2∶4。
5.根据权利要求1-4任一项所述的复合膜，其特征在于：各层挤出机的温度分别为：第一尼龙层和第二尼龙层的塑化温度为120-180℃，第一粘合层、第二粘合层和第三粘合层的塑化温度为150-200℃，第一基材层和第二基材层的塑化温度为160-180℃，第三基材层和第四基材层的塑化温度为190-210℃。
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