CN115302907A - 一种阻隔挤出片材及其制备方法 - Google Patents

一种阻隔挤出片材及其制备方法 Download PDF

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CN115302907A
CN115302907A CN202210675390.7A CN202210675390A CN115302907A CN 115302907 A CN115302907 A CN 115302907A CN 202210675390 A CN202210675390 A CN 202210675390A CN 115302907 A CN115302907 A CN 115302907A
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polypropylene
barrier
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冯春
史保利
陈健
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Anhui Tianjia New Material Technology Co ltd
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Abstract

本发明提供一种阻隔挤出片材及其制备方法，属于阻隔挤出片材技术领域，其中阻隔挤出片材包括聚乙烯层、第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层；本发明中，第一阻隔复合层和第二阻隔复合层的设置，乙烯‑乙烯醇共聚物将乙烯聚合物的加工性和乙烯醇聚合物的阻隔作用相结合，乙烯‑乙烯醇共聚物不仅表现出极好的加工性能，而且也对气体、气味、香料、溶剂等呈现出优异的阻断作用，由于同乙烯结合而具有热稳定性，含有乙烯‑乙烯醇共聚物的阻隔挤出片材，阻隔性能优良。

Description

一种阻隔挤出片材及其制备方法
技术领域
本发明属于阻隔挤出片材技术领域，尤其涉及一种阻隔挤出片材及其制备方法。
背景技术
目前塑料片材，常用于塑料包装生产企业生产杯、盘、碟等各种造型的塑料制品，以及食品和药品生产企业进行在线热成型-灌装-封盖生产线，目前，市场上用于成型-灌装-封盖生产线的连杯包装的热成型片材主要是聚苯乙烯片材、聚氯乙烯片材和聚丙烯片材，这些片材优点是工艺成熟、材料来源稳定，使用范围广泛，但现有阻隔挤出片材阻隔性能差，支撑性能差，使用时容易出现变形的现象，降低片材的使用效果，为此，我们提出一种阻隔挤出片材及其制备方法，以解决上述问题，且便于市场推广与应用。
现有阻隔挤出片材阻隔性能差，支撑性能差，使用时容易出现变形的现象，降低片材的使用效果的问题。
因此，发明一种阻隔挤出片材及其制备方法显得非常必要。
发明内容
为了解决上述技术问题，本发明提供一种阻隔挤出片材及其制备方法，以解决现有阻隔挤出片材阻隔性能差，支撑性能差，使用时容易出现变形的现象，降低片材的使用效果的问题。一种阻隔挤出片材及其制备方法，包括聚乙烯层、第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层，所述第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层从上到下依次位于聚乙烯层的下方。
优选的，所述第一阻隔复合层由乙烯-乙烯醇共聚物、聚丙烯、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成。
优选的，所述第二阻隔复合层由聚丙烯、聚酰胺、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成。
优选的，所述增强聚丙烯层为用玻璃纤维直接增强的玻璃纤维增强聚丙烯层。
一种阻隔挤出片材的制备方法，所述阻隔挤出片材的制备方法包括以下步骤：
S101：称取聚乙烯层、第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层原料，分别放入烘干箱，烘干8～12h，制得干燥原料；
S102：将干燥原料分别放到不同的加热容器中，加热至150～260℃，制得熔融原料；
S103：将熔融原料分别放入过滤器内，滤除熔融原料中的颗粒杂质，得到洁净原料；
S104：将洁净原料放入到单螺杆挤出机中，挤出制得片材胚料；
S105：将片材胚料放到热压成型机中热压成型，制得阻隔挤出片材。
优选的，所述S104中，单螺杆挤出机为十一层共挤通挤出机，且十一层共挤通挤出机设置有十一个单独的进料流道。
优选的，所述S104中，洁净原料进入单螺杆挤出机时，十一个单独的进料流道依次与聚乙烯层、第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层对齐。
与现有技术相比，本发明具有如下有益效果：
1.本发明的第一阻隔复合层和第二阻隔复合层的设置，乙烯-乙烯醇共聚物将乙烯聚合物的加工性和乙烯醇聚合物的阻隔作用相结合，乙烯-乙烯醇共聚物不仅表现出极好的加工性能，而且也对气体、气味、香料、溶剂等呈现出优异的阻断作用，由于同乙烯结合而具有热稳定性，含有乙烯-乙烯醇共聚物的阻隔挤出片材，阻隔性能优良。
2.本发明的第二阻隔复合层的设置，聚酰胺的抗张强度、耐磨性、耐针刺性良好，耐折强度大，加热后容易深拉伸成形，同时也具有一定的阻隔性。
3.本发明的增强聚丙烯层的设置，增强聚丙烯层为用玻璃纤维直接增强的玻璃纤维增强聚丙烯层，使增强聚丙烯层的软化温度为120℃，结晶度高，使阻隔挤出片材具有良好的支撑性能，长时间使用不变形，保证阻隔挤出片材的使用效果。
4.本发明中，单螺杆挤出机为十一层共挤通挤出机，且十一层共挤通挤出机设置有十一个单独的进料流道，十一个单独的进料流道依次与聚乙烯层、第一聚丙烯层、第一粘合树脂层、第一阻隔复合层、第二粘合树脂层、第二阻隔复合层、第三粘合树脂层、第二聚丙烯层、第三聚丙烯层、增强聚丙烯层和第四聚丙烯层对齐，使加工成型时阻隔挤出片材各层顺序一致，保证制备过程中阻隔挤出片材的质量。
附图说明
图1是本发明中阻隔挤出片材的结构示意图。
图2是本发明中阻隔挤出片材的制备方法的流程框图。
图中：
1-聚乙烯层，2-第一聚丙烯层，3-第一粘合树脂层，4-第一阻隔复合层，5-第二粘合树脂层，6-第二阻隔复合层，7-第三粘合树脂层，8-第二聚丙烯层，9-第三聚丙烯层，10-增强聚丙烯层，11-第四聚丙烯层。
具体实施方式
以下结合附图对本发明做进一步描述：
实施例：
如附图1至附图2所示
本发明提供一种阻隔挤出片材及其制备方法，包括聚乙烯层1、第一聚丙烯层2、第一粘合树脂层3、第一阻隔复合层4、第二粘合树脂层5、第二阻隔复合层6、第三粘合树脂层7、第二聚丙烯层8、第三聚丙烯层9、增强聚丙烯层10和第四聚丙烯层11，第一聚丙烯层2、第一粘合树脂层3、第一阻隔复合层4、第二粘合树脂层5、第二阻隔复合层6、第三粘合树脂层7、第二聚丙烯层8、第三聚丙烯层9、增强聚丙烯层10和第四聚丙烯层11从上到下依次位于聚乙烯层1的下方。
本实施例中，第一阻隔复合层4由乙烯-乙烯醇共聚物、聚丙烯、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成；第二阻隔复合层6由聚丙烯、聚酰胺、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成；乙烯-乙烯醇共聚物将乙烯聚合物的加工性和乙烯醇聚合物的阻隔作用相结合，乙烯-乙烯醇共聚物不仅表现出极好的加工性能，而且也对气体、气味、香料、溶剂等呈现出优异的阻断作用，由于同乙烯结合而具有热稳定性，含有乙烯-乙烯醇共聚物的阻隔挤出片材，阻隔性能优良。
本实施例中，增强聚丙烯层10为用玻璃纤维直接增强的玻璃纤维增强聚丙烯层；使增强聚丙烯层的软化温度为120℃，结晶度高，使阻隔挤出片材具有良好的支撑性能，长时间使用不变形，保证阻隔挤出片材的使用效果。
其中：乙烯-乙烯醇共聚物，将乙烯聚合物的加工性和乙烯醇聚合物的阻隔作用相结合，乙烯-乙烯醇共聚物不仅表现出极好的加工性能，而且也对气体、气味、香料、溶剂等呈现出优异的阻断作用，由于同乙烯结合而具有热稳定性，含有乙烯-乙烯醇共聚物阻隔层的多层容器是完全可以重复利用的，正是这些特点，在食品包装方面使含有乙烯-乙烯醇共聚物阻隔层的塑料容器能代替许多玻璃和金属容器；
聚丙烯，是丙烯通过加聚反应而成的聚合物，系白色蜡状材料，外观透明而轻，化学式为(C3H6)n，密度为0.89～0.91g/cm3，易燃，熔点189℃，在155℃左右软化，使用温度范围为-30～140℃，在80℃以下能耐酸、碱、盐液及多种有机溶剂的腐蚀，能在高温和氧化作用下分解。聚丙烯广泛应用于服装、毛毯等纤维制品、医疗器械、汽车、自行车、零件、输送管道、化工容器等生产，也用于食品、药品包装；
马来酸酐接枝聚丙烯，活性反应基团酸酐的引入，能够显著提高聚丙烯与玻纤、滑石粉和木粉之间的粘接力，明显提高材料的拉伸强度、弯曲强度和冲击强度等力学性能；马来酸酐接枝相容剂通过引入强极性反应性基团，使材料具有高的极性和反应性，是一种高分子界面偶联剂、相容剂、分散促进剂。主要用于无卤阻燃、填充、玻纤增强、增韧，金属粘结、合金相容等，能大大提高复合材料的相容性和填料的分散性，从而提高复合材料机械强度。
一种阻隔挤出片材的制备方法，包括以下步骤：
S101：称取聚乙烯层1、第一聚丙烯层2、第一粘合树脂层3、第一阻隔复合层4、第二粘合树脂层5、第二阻隔复合层6、第三粘合树脂层7、第二聚丙烯层8、第三聚丙烯层9、增强聚丙烯层10和第四聚丙烯层11原料，分别放入烘干箱，烘干8～12h，制得干燥原料；
S102：将干燥原料分别放到不同的加热容器中，加热至150～260℃，制得熔融原料；
S103：将熔融原料分别放入过滤器内，滤除熔融原料中的颗粒杂质，得到洁净原料；
S104：将洁净原料放入到单螺杆挤出机中，挤出制得片材胚料；
S105：将片材胚料放到热压成型机中热压成型，制得阻隔挤出片材。
本实施例中，S104中，单螺杆挤出机为十一层共挤通挤出机，且十一层共挤通挤出机设置有十一个单独的进料流道；S104中，洁净原料进入单螺杆挤出机时，十一个单独的进料流道依次与聚乙烯层1、第一聚丙烯层2、第一粘合树脂层3、第一阻隔复合层4、第二粘合树脂层5、第二阻隔复合层6、第三粘合树脂层7、第二聚丙烯层8、第三聚丙烯层9、增强聚丙烯层10和第四聚丙烯层11对齐；使加工成型时阻隔挤出片材各层顺序一致，保证制备过程中阻隔挤出片材的质量。
工作原理
本发明中，第一阻隔复合层4由乙烯-乙烯醇共聚物、聚丙烯、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成；第二阻隔复合层6由聚丙烯、聚酰胺、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成；乙烯-乙烯醇共聚物将乙烯聚合物的加工性和乙烯醇聚合物的阻隔作用相结合，乙烯-乙烯醇共聚物不仅表现出极好的加工性能，而且也对气体、气味、香料、溶剂等呈现出优异的阻断作用，由于同乙烯结合而具有热稳定性，含有乙烯-乙烯醇共聚物的阻隔挤出片材，阻隔性能优良；增强聚丙烯层10为用玻璃纤维直接增强的玻璃纤维增强聚丙烯层；使增强聚丙烯层的软化温度为120℃，结晶度高，使阻隔挤出片材具有良好的支撑性能，长时间使用不变形，保证阻隔挤出片材的使用效果；单螺杆挤出机为十一层共挤通挤出机，且十一层共挤通挤出机设置有十一个单独的进料流道；S104中，洁净原料进入单螺杆挤出机时，十一个单独的进料流道依次与聚乙烯层1、第一聚丙烯层2、第一粘合树脂层3、第一阻隔复合层4、第二粘合树脂层5、第二阻隔复合层6、第三粘合树脂层7、第二聚丙烯层8、第三聚丙烯层9、增强聚丙烯层10和第四聚丙烯层11对齐；使加工成型时阻隔挤出片材各层顺序一致，保证制备过程中阻隔挤出片材的质量。
利用本发明所述技术方案，或本领域的技术人员在本发明技术方案的启发下，设计出类似的技术方案，而达到上述技术效果的，均是落入本发明的保护范围。

Claims (7)

1.一种阻隔挤出片材，其特征在于：包括聚乙烯层(1)、第一聚丙烯层(2)、第一粘合树脂层(3)、第一阻隔复合层(4)、第二粘合树脂层(5)、第二阻隔复合层(6)、第三粘合树脂层(7)、第二聚丙烯层(8)、第三聚丙烯层(9)、增强聚丙烯层(10)和第四聚丙烯层(11)，所述第一聚丙烯层(2)、第一粘合树脂层(3)、第一阻隔复合层(4)、第二粘合树脂层(5)、第二阻隔复合层(6)、第三粘合树脂层(7)、第二聚丙烯层(8)、第三聚丙烯层(9)、增强聚丙烯层(10)和第四聚丙烯层(11)从上到下依次位于聚乙烯层(1)的下方。
2.如权利要求1所述的阻隔挤出片材，其特征在于：所述第一阻隔复合层(4)由乙烯-乙烯醇共聚物、聚丙烯、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成。
3.如权利要求1所述的阻隔挤出片材，其特征在于：所述第二阻隔复合层(6)由聚丙烯、聚酰胺、马来酸酐接枝聚丙烯和甲基丙烯酸环氧丙酯接枝聚丙烯共混而成。
4.如权利要求1所述的阻隔挤出片材，其特征在于：所述增强聚丙烯层(10)为用玻璃纤维直接增强的玻璃纤维增强聚丙烯层。
5.一种阻隔挤出片材的制备方法，其特征在于：所述阻隔挤出片材的制备方法包括以下步骤：
S101：称取聚乙烯层(1)、第一聚丙烯层(2)、第一粘合树脂层(3)、第一阻隔复合层(4)、第二粘合树脂层(5)、第二阻隔复合层(6)、第三粘合树脂层(7)、第二聚丙烯层(8)、第三聚丙烯层(9)、增强聚丙烯层(10)和第四聚丙烯层(11)原料，分别放入烘干箱，烘干8～12h，制得干燥原料；
S102：将干燥原料分别放到不同的加热容器中，加热至150～260℃，制得熔融原料；
S103：将熔融原料分别放入过滤器内，滤除熔融原料中的颗粒杂质，得到洁净原料；
S104：将洁净原料放入到单螺杆挤出机中，挤出制得片材胚料；
S105：将片材胚料放到热压成型机中热压成型，制得阻隔挤出片材。
6.如权利要求5所述的阻隔挤出片材的制备方法，其特征在于：所述S104中，单螺杆挤出机为十一层共挤通挤出机，且十一层共挤通挤出机设置有十一个单独的进料流道。
7.如权利要求6所述的阻隔挤出片材的制备方法，其特征在于：所述S104中，洁净原料进入单螺杆挤出机时，十一个单独的进料流道依次与聚乙烯层(1)、第一聚丙烯层(2)、第一粘合树脂层(3)、第一阻隔复合层(4)、第二粘合树脂层(5)、第二阻隔复合层(6)、第三粘合树脂层(7)、第二聚丙烯层(8)、第三聚丙烯层(9)、增强聚丙烯层(10)和第四聚丙烯层(11)对齐。
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DE102022005097A1 (de) 2022-11-21 2024-05-23 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Retortensterilisierbares Lagenmaterial aus überwiegend Polypropylen
DE102022130670A1 (de) 2022-11-21 2024-05-23 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Retortensterilisierbares Lagenmaterial aus überwiegend Polypropylen
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022005099A1 (de) 2022-11-21 2024-05-23 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Retortensterilisierbares Lagenmaterial aus überwiegend Polypropylen
DE102022005097A1 (de) 2022-11-21 2024-05-23 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Retortensterilisierbares Lagenmaterial aus überwiegend Polypropylen
DE102022130670A1 (de) 2022-11-21 2024-05-23 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Retortensterilisierbares Lagenmaterial aus überwiegend Polypropylen
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