CN107759835A - 一种高柔性的环保型收缩膜 - Google Patents

一种高柔性的环保型收缩膜 Download PDF

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CN107759835A
CN107759835A CN201610675618.7A CN201610675618A CN107759835A CN 107759835 A CN107759835 A CN 107759835A CN 201610675618 A CN201610675618 A CN 201610675618A CN 107759835 A CN107759835 A CN 107759835A
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Abstract

本发明公开了一种高柔性的环保型收缩膜，该膜由以下重量份原料组份：聚丙烯5‑15份、聚乙烯15‑20份、线性低密度聚乙烯30‑40份、高密度聚乙烯1‑5份、热塑淀粉60‑80份、邻苯二甲酸二丁酯5‑10份、聚乙烯蜡1‑5份、抗氧剂168 0.5‑1份、氢化蓖麻油1‑2份。本发明具有透明度高、拉伸强度高，抗撕裂强度高、柔软性好、环保的优点。

Description

一种高柔性的环保型收缩膜
技术领域
本发明涉及一种高柔性的环保型收缩膜。
背景技术
在PE膜的使用过程中，由于收缩膜广泛地与空气、阳光等接触，其不可避免地会出现老化等问题，老化问题将直接影响着收缩膜的使用寿命。而为了避免饮料包装后，在运输使用过程中收缩膜的破裂，还需要提高PE热收缩膜的高韧性、柔软性。此外，由于PE收缩膜的大量使用，造成了对环境的污染，因此，在提高PE收缩膜使用性能的同时，还需要提高其环保性能。
发明内容
本发明的目的是为了克服以上的不足，提供一种柔软性高、韧性好、环保的一种高柔性的环保型收缩膜。
本发明的目的通过以下技术方案来实现一种高柔性的环保型收缩膜，一种高柔性的环保型收缩膜由以下重量份原料组份：
聚丙烯5-15份、聚乙烯15-20份、线性低密度聚乙烯30-40份、高密度聚乙烯1-5份、热塑淀粉60-80份、邻苯二甲酸二丁酯5-10份、聚乙烯蜡1-5份、抗氧剂 168 0.5-1份、氢化蓖麻油1-2份。
本发明的进一步改进在于：该膜可为单层或通过挤压机进行多层挤压而成。
本发明与现有技术相比具有以下优点：成分中的聚丙烯，提高了整体的柔软性；聚乙烯与线性低密度聚乙烯相比，材质软，柔软性好，具有高绝缘性；而线性低密度聚乙烯提高了表面光泽好，具有低温韧性、高模量、抗弯曲和耐应力开裂性，低温下抗冲击强度高；高密度聚乙烯提高了整体的耐高温、耐低温、耐蒸汽渗透性及抗环境应力开裂性；热塑淀粉作为主要成分，既可以进行热塑加工,又能快速、完全地在自然环境中降解，作为一种新型的全生物降解材料,能进行堆肥和重复利用，良好的热收缩性能，可以轻松地进行收缩套标的制作，符合环保理念，大大降低了收缩膜对环境造成的污染；邻苯二甲酸二丁酯是增塑剂，与热塑淀粉同时使用，提高了稳定性；聚乙烯蜡作为润滑剂醇提高了抗静电性和膜的柔软性；抗氧剂 168的添加，起到了提高稳定性、耐久性的作用；氢化蓖麻油提高了固化速率；综上，本发明具有透明度高、拉伸强度高，耐候性好，抗撕裂强度高、柔软性好、环保的优点。
具体实施方式：
为了加深对本发明的理解，下面将结合实例对本发明作进一步详述，该实施例仅用于解释本发明，并不构成对本发明保护范围的限定。
实验原料：聚丙烯5-15份、聚乙烯15-20份、线性低密度聚乙烯30-40份、高密度聚乙烯1-5份、热塑淀粉60-80份、邻苯二甲酸二丁酯5-10份、聚乙烯蜡1-5份、抗氧剂 1680.5-1份、氢化蓖麻油1-2份。
本发明的进一步改进在于：可将上述原料制成的膜通过挤压机进行多层挤压进行二次加工。
下面分别通过实施例1-6对本发明作进一步详细描述实验数据如下表所示：
实施例1：
丙烯5份、聚乙烯15份、线性低密度聚乙烯30份、高密度聚乙烯1份、热塑淀粉60份、邻苯二甲酸二丁酯5份、聚乙烯蜡1份、抗氧剂 168 1份、氢化蓖麻油2份。
通过实施例1配比制成的膜进行挤压复合，复合层数为5层。
实施例2：
丙烯15份、聚乙烯20份、线性低密度聚乙烯40份、高密度聚乙烯5份、热塑淀粉60份、邻苯二甲酸二丁酯10份、聚乙烯蜡5份、抗氧剂 168 1份、氢化蓖麻油2份。
通过实施例2配比制成的膜不进行复合。
实施例3：
丙烯10份、聚乙烯18份、线性低密度聚乙烯32份、高密度聚乙烯4份、热塑淀粉70份、邻苯二甲酸二丁酯5份、聚乙烯蜡5份、抗氧剂 168 0.5份、氢化蓖麻油1.5份。
通过实施例3配比制成的膜不进行复合。
实施例4：
丙烯5份、聚乙烯17份、线性低密度聚乙烯30份、高密度聚乙烯1份、热塑淀粉80份、邻苯二甲酸二丁酯5份、聚乙烯蜡1份、抗氧剂 168 0.5份、氢化蓖麻油1份。
通过实施例4配比制成的膜进行挤压复合，复合层数为3层。
实施例5：
丙烯10份、聚乙烯18份、线性低密度聚乙烯35份、高密度聚乙烯2份、热塑淀粉80份、邻苯二甲酸二丁酯6份、聚乙烯蜡4份、抗氧剂 168 1份、氢化蓖麻油1份。
通过实施例5配比制成的膜不进行复合。
实施例6：
丙烯5份、聚乙烯20份、线性低密度聚乙烯35份、高密度聚乙烯3份、热塑淀粉75份、邻苯二甲酸二丁酯9份、聚乙烯蜡1份、抗氧剂 168 0.5份、氢化蓖麻油2份。
通过实施例6配比制成的膜不进行复合。
对实施例1-6制成的收缩膜取小样进行性能测试，具体测试的数据见表1。
表1
将实施例1-6制成的膜，取小样，在不同温度环境下进行收缩张力（单位/MPA）测试，具体测试结果见表2。
表2
实施例1 实施例2 实施例3 实施例4 实施例5 实施例6 对比组
-10℃ 2.65 2.87 3.15 2.55 2.74 3.11 2.75
0℃ 3.15 3.32 3.32 2.74 2.81 3.32 2.75
15℃ 3.20 3.46 3.46 2.89 3.44 3.55 2.75
100℃ 3.63 3.57 3.78 2.92 3.72 3.69 2.75
110℃ 3.75 3.59 3.84 2.95 3.79 3.81 3.60
120℃ 3.20 3.52 3.81 2.94 3.77 3.58 3.25
本发明实施例1至6制成的收缩膜，均具有较强的强韧性，在保证透明度的同时，双向收缩的热收缩性能也非常的好；而且，通过上述实验数据可知，不论通过上述配比制成的收缩膜为单层，还是通过多层复合二次加工制成的收缩膜，都具有拉伸强度高，延伸率大、自粘性好，透明度高等特点。
综上可知，本发明具有较好的自粘结性能，良好的柔韧性和拉伸性, 强包缠能力，高抗刺穿强度，高透明度和光泽度，收缩功能强,回缩紧固性好，被包物件整体稳固性好,降低了运输过程中的破损、倒塌、散包等现象。在使用过程中不会产生有害气体，并能适应大部分自动式、半自动式包装机械的要求。在包装过程中收缩率也具有较为稳定性、均衡型，包装完成后边角柔软，有韧性、抗低温、不会发硬，有效保护被包装物品。是一种经济实惠型产品，可在快餐食品、陶瓷制品、茶具、机械零部件等领域进行推广。
以上所述仅为说明本发明的实施方式，并不用于限制本发明，对于本领域的技术人员来说，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (2)

1.一种高柔性的环保型收缩膜，其特征在于，该膜由以下重量份原料组成：聚丙烯5-15份、聚乙烯15-20份、线性低密度聚乙烯30-40份、高密度聚乙烯1-5份、热塑淀粉60-80份、邻苯二甲酸二丁酯5-10份、聚乙烯蜡1-5份、抗氧剂 168 0.5-1份、氢化蓖麻油1-2份。
2.根据权利要求1所述的一种高柔性的环保型收缩膜，其特征在于：该膜可为单层或通过挤压机进行多层挤压而成。
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CN113480796A (zh) * 2021-06-16 2021-10-08 广州爱科琪盛塑料有限公司 一种透气膜及其制备方法

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Application publication date: 20180306