CN109206742A - 一种超薄手用拉伸膜及其制备方法 - Google Patents

一种超薄手用拉伸膜及其制备方法 Download PDF

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CN109206742A
CN109206742A CN201810916210.3A CN201810916210A CN109206742A CN 109206742 A CN109206742 A CN 109206742A CN 201810916210 A CN201810916210 A CN 201810916210A CN 109206742 A CN109206742 A CN 109206742A
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刘庆双
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Shenzhen Double Source Packaging Materials Co Ltd
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Abstract

本发明公开了一种超薄手用拉伸膜及其制备方法，包括以下具体材料份数，其中聚苯乙烯5‑8份、聚苯乙烯3‑5份、丁二烯‑苯乙烯共聚物1.5‑4份、二苯甲烷二异氰酸脂3.5‑9份，聚对苯二甲酸乙二醇酯6‑12份、聚偏氟乙烯4‑8份、聚氯乙烯3.5‑9份、聚全氟乙丙烯2‑4.5份、聚丙烯7‑14份、聚酰胺2‑5份、聚对苯二甲酸乙二醇酯4‑8份、醋酸纤维素3‑6份、羧甲基纤维素2‑5份、聚乙二醇0.4‑0.8份、戊二醛1‑2份、聚碳酸酯1.4‑3份、增塑剂0.5‑2.5份、辅助成膜剂0.3‑1.2份。本发明制作的拉伸膜，轻薄且厚度均匀，同时拉伸强度好，不易撕裂，且整个薄膜的密封性较高，加工工艺简单，原料成本低，适宜量化生产。

Description

一种超薄手用拉伸膜及其制备方法
技术领域
本发明涉及塑料薄膜技术领域，尤其是一种超薄手用拉伸膜及其制备方法。
背景技术
塑料薄膜在包装领域的应用最为广泛。塑料薄膜可用于食品包装、电器产品包装、日用品包装、服装包装等等。它们有一个共同点，就是对塑料薄膜都要进行彩色印刷，而作为食品包装还要进行多层复合或真空镀铝等工艺操作。因此，要求塑料薄膜表面自由能要高、湿张力要大，以有利于印刷油墨、粘合剂或镀铝层与塑料薄膜的牢固粘合；在塑料薄膜生产卷取和高速包装过程中，则要求薄膜表面有一定的摩擦性能防止薄膜粘连或打滑；在用于电器、电子产品等包装时，则要求薄膜具有一定的防静电性能等等。
然而目前使用的拉伸膜，密封性差，耐高温差，较多无法进行回收利用，容易造成污染，同时传统的拉伸膜容易在拉伸过程中断裂，并且传统的制备工艺复杂，成本较高，因此，在这里我们提出一种超薄手用拉伸膜及其制备方法。
发明内容
本发明针对背景技术中的不足，提供了一种超薄手用拉伸膜及其制备方法。
本发明为解决上述技术不足，采用改性的技术方案，一种超薄手用拉伸膜及其制备方法，包括以下具体材料份数，其中聚苯乙烯5-8份、聚苯乙烯3-5份、丁二烯-苯乙烯共聚物1.5-4份、二苯甲烷二异氰酸脂3.5-9份，聚对苯二甲酸乙二醇酯6-12份、聚偏氟乙烯4-8份、聚氯乙烯3.5-9份、聚全氟乙丙烯2-4.5份、聚丙烯7-14份、聚酰胺2-5份、聚对苯二甲酸乙二醇酯4-8份、醋酸纤维素3-6份、羧甲基纤维素2-5份、聚乙二醇0.4-0.8份、戊二醛1-2份、聚碳酸酯1.4-3份、增塑剂0.5-2.5份、辅助成膜剂0.3-1.2份。
作为本发明的进一步优选方式，还包括以下具体材料份数，其中聚苯乙烯8份、聚苯乙烯5份、丁二烯-苯乙烯共聚物4份、二苯甲烷二异氰酸脂9份，聚对苯二甲酸乙二醇酯12份、聚偏氟乙烯8份、聚氯乙烯9份、聚全氟乙丙烯4.5份、聚丙烯14份、聚酰胺5份、聚对苯二甲酸乙二醇酯8份、醋酸纤维素6份、羧甲基纤维素5份、聚乙二醇0.8份、戊二醛2份、聚碳酸酯3份、增塑剂2.5份、辅助成膜剂1.2份。
作为本发明的进一步优选方式，还包括以下具体材料份数，其中聚苯乙烯5份、聚苯乙烯3份、丁二烯-苯乙烯共聚物1.5份、二苯甲烷二异氰酸脂3.5份，聚对苯二甲酸乙二醇酯6份、聚偏氟乙烯4份、聚氯乙烯3.5份、聚全氟乙丙烯2份、聚丙烯7份、聚酰胺2份、聚对苯二甲酸乙二醇酯4份、醋酸纤维素3份、羧甲基纤维素2份、聚乙二醇0.4份、戊二醛1份、聚碳酸酯1.4份、增塑剂0.5份、辅助成膜剂0.3份。
作为本发明的进一步优选方式，还包括具体的加工步骤包括如下，
S1，分别聚苯乙烯、聚苯乙烯、丁二烯-苯乙烯共聚物、聚偏氟乙烯、聚氯乙烯、聚全氟乙丙烯、聚丙烯原料破碎4min-8min，利用250-450目筛网进行过滤；
S2，将二苯甲烷二异氰酸脂、聚对苯二甲酸乙二醇酯、聚酰胺、聚对苯二甲酸乙二醇酯、醋酸纤维素、羧甲基纤维素、聚乙二醇、戊二醛、聚碳酸酯，与步骤S1中的原料进行充分的搅拌混合，然后将其进行加热熔融；
S3，将增塑剂、辅助成膜剂加入至步骤S2中进行充分混合；
S4，再所有配料经塑料粒子混合机混合均匀后，在120-160℃温度下在双螺杆挤出机上造粒，再采用单螺杆挤出吹塑机在145-175℃下吹塑成25um的薄膜。
作为本发明的进一步优选方式，步骤S2中，控制加热温度在220-350℃，持续45min，搅拌转速控制在460-520r/min。
作为本发明的进一步优选方式，所述辅助成膜剂为改性纤维素醚类物质，所述增塑剂为含三个羟基以上的水溶性多羟基类物。
本发明所达到的有益效果是：本发明制作的拉伸膜，轻薄且厚度均匀，同时拉伸强度好，不易撕裂，且整个薄膜的密封性较高，加工工艺简单，原料成本低，适宜量化生产。
具体实施方式
下面将结合本发明实施例中，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供一种技术方案：一种超薄手用拉伸膜及其制备方法，包括以下具体材料份数，其中聚苯乙烯5-8份、聚苯乙烯3-5份、丁二烯-苯乙烯共聚物1.5-4份、二苯甲烷二异氰酸脂3.5-9份，聚对苯二甲酸乙二醇酯6-12份、聚偏氟乙烯4-8份、聚氯乙烯3.5-9份、聚全氟乙丙烯2-4.5份、聚丙烯7-14份、聚酰胺2-5份、聚对苯二甲酸乙二醇酯4-8份、醋酸纤维素3-6份、羧甲基纤维素2-5份、聚乙二醇0.4-0.8份、戊二醛1-2份、聚碳酸酯1.4-3份、增塑剂0.5-2.5份、辅助成膜剂0.3-1.2份。
还包括以下具体材料份数，其中聚苯乙烯8份、聚苯乙烯5份、丁二烯-苯乙烯共聚物4份、二苯甲烷二异氰酸脂9份，聚对苯二甲酸乙二醇酯12份、聚偏氟乙烯8份、聚氯乙烯9份、聚全氟乙丙烯4.5份、聚丙烯14份、聚酰胺5份、聚对苯二甲酸乙二醇酯8份、醋酸纤维素6份、羧甲基纤维素5份、聚乙二醇0.8份、戊二醛2份、聚碳酸酯3份、增塑剂2.5份、辅助成膜剂1.2份。
还包括以下具体材料份数，其中聚苯乙烯5份、聚苯乙烯3份、丁二烯-苯乙烯共聚物1.5份、二苯甲烷二异氰酸脂3.5份，聚对苯二甲酸乙二醇酯6份、聚偏氟乙烯4份、聚氯乙烯3.5份、聚全氟乙丙烯2份、聚丙烯7份、聚酰胺2份、聚对苯二甲酸乙二醇酯4份、醋酸纤维素3份、羧甲基纤维素2份、聚乙二醇0.4份、戊二醛1份、聚碳酸酯1.4份、增塑剂0.5份、辅助成膜剂0.3份。
还包括具体的加工步骤包括如下，
S1，分别聚苯乙烯、聚苯乙烯、丁二烯-苯乙烯共聚物、聚偏氟乙烯、聚氯乙烯、聚全氟乙丙烯、聚丙烯原料破碎4min-8min，利用250-450目筛网进行过滤；
S2，将二苯甲烷二异氰酸脂、聚对苯二甲酸乙二醇酯、聚酰胺、聚对苯二甲酸乙二醇酯、醋酸纤维素、羧甲基纤维素、聚乙二醇、戊二醛、聚碳酸酯，与步骤S1中的原料进行充分的搅拌混合，然后将其进行加热熔融；
S3，将增塑剂、辅助成膜剂加入至步骤S2中进行充分混合；
S4，再所有配料经塑料粒子混合机混合均匀后，在120-160℃温度下在双螺杆挤出机上造粒，再采用单螺杆挤出吹塑机在145-175℃下吹塑成25um的薄膜。
步骤S2中，控制加热温度在220-350℃，持续45min，搅拌转速控制在460-520r/min。
所述辅助成膜剂为改性纤维素醚类物质，所述增塑剂为含三个羟基以上的水溶性多羟基类物。
本发明拉伸薄膜材料参数表格如下：表1
传统拉伸薄膜材料参数表格如下：表2
综上述，通过表1和表2明显看出本发明的性能更优，本发明制作的拉伸膜，轻薄且厚度均匀，同时拉伸强度好，不易撕裂，且整个薄膜的密封性较高，加工工艺简单，原料成本低，适宜量化生产。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点,对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (6)

1.一种超薄手用拉伸膜及其制备方法，其特征在于，包括以下具体材料份数，其中聚苯乙烯5-8份、聚苯乙烯3-5份、丁二烯-苯乙烯共聚物1.5-4份、二苯甲烷二异氰酸脂3.5-9份，聚对苯二甲酸乙二醇酯6-12份、聚偏氟乙烯4-8份、聚氯乙烯3.5-9份、聚全氟乙丙烯2-4.5份、聚丙烯7-14份、聚酰胺2-5份、聚对苯二甲酸乙二醇酯4-8份、醋酸纤维素3-6份、羧甲基纤维素2-5份、聚乙二醇0.4-0.8份、戊二醛1-2份、聚碳酸酯1.4-3份、增塑剂0.5-2.5份、辅助成膜剂0.3-1.2份。
2.根据权利要求1所述的一种超薄手用拉伸膜及其制备方法，其特征在于，还包括以下具体材料份数，其中聚苯乙烯8份、聚苯乙烯5份、丁二烯-苯乙烯共聚物4份、二苯甲烷二异氰酸脂9份，聚对苯二甲酸乙二醇酯12份、聚偏氟乙烯8份、聚氯乙烯9份、聚全氟乙丙烯4.5份、聚丙烯14份、聚酰胺5份、聚对苯二甲酸乙二醇酯8份、醋酸纤维素6份、羧甲基纤维素5份、聚乙二醇0.8份、戊二醛2份、聚碳酸酯3份、增塑剂2.5份、辅助成膜剂1.2份。
3.根据权利要求1所述的一种超薄手用拉伸膜及其制备方法，其特征在于，还包括以下具体材料份数，其中聚苯乙烯5份、聚苯乙烯3份、丁二烯-苯乙烯共聚物1.5份、二苯甲烷二异氰酸脂3.5份，聚对苯二甲酸乙二醇酯6份、聚偏氟乙烯4份、聚氯乙烯3.5份、聚全氟乙丙烯2份、聚丙烯7份、聚酰胺2份、聚对苯二甲酸乙二醇酯4份、醋酸纤维素3份、羧甲基纤维素2份、聚乙二醇0.4份、戊二醛1份、聚碳酸酯1.4份、增塑剂0.5份、辅助成膜剂0.3份。
4.根据权利要求1所述的一种超薄手用拉伸膜及其制备方法，其特征在于，还包括具体的加工步骤包括如下，
S1，分别聚苯乙烯、聚苯乙烯、丁二烯-苯乙烯共聚物、聚偏氟乙烯、聚氯乙烯、聚全氟乙丙烯、聚丙烯原料破碎4min-8min，利用250-450目筛网进行过滤；
S2，将二苯甲烷二异氰酸脂、聚对苯二甲酸乙二醇酯、聚酰胺、聚对苯二甲酸乙二醇酯、醋酸纤维素、羧甲基纤维素、聚乙二醇、戊二醛、聚碳酸酯，与步骤S1中的原料进行充分的搅拌混合，然后将其进行加热熔融；
S3，将增塑剂、辅助成膜剂加入至步骤S2中进行充分混合；
S4，再所有配料经塑料粒子混合机混合均匀后，在120-160℃温度下在双螺杆挤出机上造粒，再采用单螺杆挤出吹塑机在145-175℃下吹塑成25um的薄膜。
5.根据权利要求1所述的一种超薄手用拉伸膜及其制备方法，其特征在于，步骤S2中，控制加热温度在220-350℃，持续45min，搅拌转速控制在460-520r/min。
6.根据权利要求1所述的一种超薄手用拉伸膜及其制备方法，其特征在于，所述辅助成膜剂为改性纤维素醚类物质，所述增塑剂为含三个羟基以上的水溶性多羟基类物。
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