CN111716849A - 一种新型热封易揭型吸塑包装材料 - Google Patents
一种新型热封易揭型吸塑包装材料 Download PDFInfo
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Abstract
本发明公开了一种新型热封易揭型吸塑包装材料，涉及包装材料领域，包括成型中间层，所述成型中间层的下端侧壁粘贴有第一粘接层，所述第一粘接层的下端侧壁设置有阻隔机构，所述成型中间层的上端侧壁设置有第二粘接层，所述第二粘接层的上端侧壁设置有耐热性外层，所述阻隔机构包括设置在第一粘接层下端侧壁的复合层，针对传统多层复合的吸塑材料包装产品后，热封层无法打开问题，通过材料设计，实现热封层的易揭性，解决产品包装后包装外壳拆卸问题，同时通过吸塑包装过程对材料的热封性、易成型及面层耐热等加工性能，通过对的材料结构的多层化设计，实现成型加工过程中的良好的热封性、热成型性、表面耐热性及力学综合性能。
Description
技术领域
本发明涉及包装材料领域，尤其涉及一种新型热封易揭型吸塑包装材料。
背景技术
吸塑成型作为塑料成型的主要方式之一，由于其具有成型材料节约、重量轻、高阻隔及密封性好、可包装各种异型材料及符合环保包装性能，广泛用于工业生产及日常生活中的各类包装产品，特别是用于各类液体或膏体形态的物料包装，如奶制品、食品、化妆品、药类（医药、农药类）等包装，由于吸塑成型可通过不同模具形状设计来实现风格各异，样式丰富的包装，在追求物质及文化多样性的今天，具有独特的吸引力和巨大的销售市场。
然而使用传统的吸塑材料在液体或膏体物料的包装，如何满足产品使用过程，其包装外壳方便撕开使用，采用单一易撕型材质片材，通过边缘缺口方式，虽可以实现方便撕开，但单一材质，很难满足大部分产品特别是奶制品物料，对于包装材料的水汽特别是氧气的阻隔要求，而传统的多组份的复合片材，虽可以满足产品物料对于水汽及气体的阻隔要求，但由于多层复合，各层片材物性差异较大，缺口方式撕开，很难实现每层材料的易撕性。如何在采用多层复合材料时，在满足材料对于包装物料气体及水汽阻隔的同时，兼顾包材良好的热加工性、优秀的力学性能、可印性及终端使用过程包材的易揭型，具有重要意义。
发明内容
本发明的目的是为了解决传统的吸塑包装外壳单层材质对水汽阻隔效果不好，多层材质对于包装拆卸过程困难问题，而提出的一种新型热封易揭型吸塑包装材料。
为了实现上述目的，本发明采用了如下技术方案：
一种新型热封易揭型吸塑包装材料，包括成型中间层，所述成型中间层的下端侧壁粘贴有第一粘接层，所述第一粘接层的下端侧壁设置有阻隔机构，所述成型中间层的上端侧壁设置有第二粘接层，所述第二粘接层的上端侧壁设置有耐热性外层。
优选的，所述阻隔机构包括设置在第一粘接层下端侧壁的复合层，所述复合层的下端侧壁安装有第三粘结层，所述第四粘结层的下端侧壁气体阻隔层，所述气体阻隔层的下端侧壁设置有第四粘接层，所述第四粘接层的下端侧壁粘贴有热封层。
优选的，所述的阻隔机构为通过多层共挤或流延方式成型，之后通过复合层和第一粘接层与成型中间层粘接在一起。
优选的，所述第一粘接层和第二粘接层由聚氨酯类物质加工制成。
优选的，所述耐热面层由为改性聚乙烯、聚丙烯、聚酰胺等物质合成。
优选的，所述阻隔机构的厚度为15~150um，所述成型中间层的厚度为100~650um，所述耐热外层的厚度为15~150um，所述第一粘接层和第二粘接层的厚度均为2~8μm。
优选的，所述第三、第四粘接层由改性聚乙烯类物质制成。
优选的，所述的复合层由聚乙烯、改性聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物树脂等单组份或多组份制成。
优选的，所述阻隔层由乙烯-乙烯醇共聚物、聚酰胺、聚酯、聚偏氯乙烯等具有气体阻隔性能树脂单组份或多组份制成。
优选的，所述热封层的表面呈微观状态的蜂窝状、海岛状设置。
优选的，所述成型中间层由聚苯乙烯、改性聚苯乙烯、聚丙烯、聚酯等物质制成。
本发明的有益效果为：本发明中，针对传统多层复合的吸塑材料包装产品后，热封层无法打开问题，通过材料设计，实现热封层的易揭性，解决产品包装后包装外壳拆卸问题，同时通过吸塑包装过程对材料的热封性、易成型及面层耐热等加工性能，通过对的材料结构的多层化设计，实现成型加工过程中的良好的热封性、热成型性、表面耐热性及力学综合性能，同时对材料的阻隔性能的优化，实现包装材料自身良好的水汽及氧气等气体阻隔性，通过对成型中间层或面层进行图案的印刷，实现包装产品的图案多样性和精美性。
附图说明
图1为本发明的结构示意图。
图2为本发明的整体示意图。
图3为本发明的A部分放大图。
图中标号：1成型中间层、2耐热性外层、3阻隔机构、4第一粘接层、5第二粘接层、6复合层、7第三粘接层、8气体阻隔层、9第四粘结层、10热封层。
具体实施方式
下面将结合本发明实施例中的附图，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。
参照图1-3所示的一种新型热封易揭型吸塑包装材料，包括成型中间层1，所述成型中间层1由聚苯乙烯物质制成，具有静电低、密度小、易成型、耐冲击、易着色以及良好的卫生性能，成型中间层1的下端侧壁粘贴有第一粘接层4，第一粘接层4的下端侧壁设置有阻隔机构3，阻隔机构3包括设置在第一粘接层4下端侧壁的复合层6，复合层6的下端侧壁安装有第三粘结层7，第三粘结层7的下端侧壁气体阻隔层8，气体阻隔层8的下端侧壁设置有第四粘接层9，第四粘接层9的下端侧壁粘贴有热封层10，热封层10的表面呈微观状态的蜂窝状或海岛状设置，使得热封层10热封后，易揭开；
第四粘接层9由聚氨酯类物质制成，第四粘接层9的下端侧壁粘贴有热封层10，热封层10采用易揭型聚乙烯，气体阻隔层8采用乙烯-乙烯醇共聚物(EVOH)，在满足热封性能、易揭性能的同时，提供材料优秀的气体阻隔性能；
成型中间层1的上端侧壁设置有第二粘接层5，第一粘接层4和第二粘接层5由聚氨酯类物质加工制成，使得其具有初粘力高，耐热性佳、耐蒸煮性及无溶剂残留等可用于食品接触包装材料复合等优点，第二粘接层5的上端侧壁设置有耐热性外层2，耐热面层2由为改性聚乙烯、聚丙烯、聚酰胺、聚酯等物质合成，具有较好耐热性及可印性，同时具有更好的延展性，在吸塑成型过程中，具有更好的成型加工性能，其中阻隔机构3的厚度为15~150um，成型中间层1的厚度为100~650um，耐热外层2的厚度为15~150um，第一粘接层4和第二粘接层5的厚度均为2~8μm，热封内层3、中间层1和耐热外层2表面均需要进行单面或双面电晕处理，以提高材料表面张力，实现复合牢固度，进一步的增强了其使用效果。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、 “右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“ 顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的设备或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、 “第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。
Claims (11)
1.一种新型热封易揭型吸塑包装材料，包括成型中间层（1），其特征在于，所述成型中间层（1）的下端侧壁粘贴有第一粘接层（4），所述第一粘接层（4）的下端侧壁设置有阻隔机构(3)，所述成型中间层（1）的上端侧壁设置有第二粘接层（5），所述第二粘接层（5）的上端侧壁设置有耐热性外层（2）。
2.根据权利要求1所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述阻隔机构（3）包括设置在第一粘接层（4）下端侧壁的复合层（6），所述复合层（6）的下端侧壁安装有第三粘结层（7），所述第三粘结层（7）的下端侧壁气体阻隔层（8），所述气体阻隔层（8）的下端侧壁设置有第四粘接层（9），所述第四粘接层（9）的下端侧壁粘贴有热封层（10）。
3.根据权利要求1所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述第一粘接层（3）和第二粘接层（4）由聚氨酯类或丙烯酸类物质加工制成。
4.根据权利要求1所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述耐热面层（2）由为改性聚乙烯、聚丙烯、聚酰胺等物质合成。
5.根据权利要求1所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述阻隔机构的厚度为15~150um，所述成型中间层（1）的厚度为100~650um，所述耐热外层（2）的厚度为15~150um，所述第一粘接层（3）和第二粘接层（4）的厚度均为2~8μm。
6.根据权利要求2所述的一种新型热封易揭型吸塑包装材料，所述的阻隔机构3为通过多层共挤或流延方式成型，之后通过复合层（6）和第一粘接层（4）与成型中间层（1）粘接在一起。
7.根据权利要求2所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述的复合层（6）为聚乙烯、改性聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物树脂等单组份或多组份制成。
8.根据权利要求2所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述第三粘接层（7）、第四粘接层（9）由改性聚乙烯物质制成。
9.根据权利要求2所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述阻隔层（8）由乙烯-乙烯醇共聚物、聚酰胺、聚酯、聚偏氯乙烯等具有气体阻隔性能树脂单组份或多组份制成。
10.根据权利要求2所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述热封层（10）的表面呈微观状态的蜂窝状、海岛状设置。
11.根据权利要求1所述的一种新型热封易揭型吸塑包装材料，其特征在于，所述成型中间层（1）由聚苯乙烯、改性聚苯乙烯、聚丙烯、聚酯等物质制成。
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