CN106046500A - 一种用于烟草卷烟的pe热收缩膜包装袋生产工艺 - Google Patents

一种用于烟草卷烟的pe热收缩膜包装袋生产工艺 Download PDF

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CN106046500A
CN106046500A CN201610534678.7A CN201610534678A CN106046500A CN 106046500 A CN106046500 A CN 106046500A CN 201610534678 A CN201610534678 A CN 201610534678A CN 106046500 A CN106046500 A CN 106046500A
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江龙义
江嘉
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Anhui Shengda Packing Co Ltd
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Abstract

本发明公开了一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，涉及热收缩膜生产工艺领域，包括原材料准备、混料处理、高温混炼、模具成型和冷却处理、半成品处理、检验和包装成品六个工艺过程，本发明采用优质原材料LDPE低密度聚乙烯、MLLCPE茂金属、HDPE高密度聚乙烯和LLDPE线性聚乙烯制成，可以保持热收缩膜延伸率大、自粘性好和透明度高的特点，且具有良好撕裂强度、断裂拉伸强度、断裂伸长率、冲击强度等物理机械性能，值得推广。

Description

一种用于烟草卷烟的PE热收缩膜包装袋生产工艺
技术领域
本发明涉及热收缩膜生产工艺领域，具体涉及一种用于烟草卷烟的PE热收缩膜包装袋生产工艺。
背景技术
PE热收缩膜作为一种新型的包装材料，其具有以下优点：加工成型性好；优异的热稳定性和耐候性；使用方便，安全卫生；同时热收缩膜包装的商品可以做到“贴体”包装，使得商品美观耐看；热收缩膜的生产和商品包装工艺都比较简单，人工成本低，生产效率高，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，MLLCPE茂金属是一种拉力强度大、热封性好的茂金属聚合物，通过上述材料制成的PE热收缩膜在保持热收缩膜原有性能的基础上，具有更好得机械性能。
发明内容
本发明所要解决的问题是提供一种，性能更优、装配质量更高且生产工艺简单的用于烟草卷烟的PE热收缩膜包装袋的生产工艺。
为了实现上述目的，本发明采取的技术方案为：所提供的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于，包括下述工艺步骤：
(1)原材料准备：该PE热收缩膜的生产原材料包括如下质量分数：LDPE低密度聚乙烯75％-80％、MLLCPE茂金属5％-10％、HDPE高密度聚乙烯10％、LLDPE线性聚乙烯5％；
(2)混料处理：将原材料加入卧式高速混合机中，混料时长为15min，转速为150rpm-200rpm；
(3)高温混炼：将步骤(2)得到的混料放入主机中进行高温混炼，混炼设有4个阶段，每个阶段混炼时长为30min；
(4)模具成型和冷却处理：将步骤(3)得到的物料通过双螺杆挤出机挤出，挤出温度为130℃-150℃，并通过吹膜机的双风口冷却风环进行冷却；
(5)半成品处理：将冷却后的物料上牵引至拉伸烘箱，烘干温度为90℃-100℃，并通过辅机分切物料，得到薄膜半成品。
(6)检验和包装成品：通过复卷机对得到的薄膜半成品进行检验，检验通过后对其进行收卷成膜，并进行包装出库。
优选的，所述步骤(1)中所述LDPE低密度聚乙烯为熔融指数为0.3g/10min-0.5g/10min，密度为0.93g/cm3的低密度聚乙烯,所述MLLCPE茂金属为D60,美国Exxon公司生产。
优选的，所述步骤(1)中所述HDPE高密度聚乙烯为熔融指数为0.4g/10min-0.6g/10min，密度为0.92g/cm3-0.965g/cm3的高密度聚乙烯。
优选的，所述步骤(3)中高温混炼温度为170℃-200℃。
优选的，所述步骤(4)中通过双风口冷却风环将物料冷却至30℃-40℃。
优选的，所述步骤(5)中横向拉伸倍数为6-7，纵向拉伸倍数6-6.5。
优选的，所述步骤(6)中打孔孔径为0.1-2.5cm。
采用本发明的技术方案，本发明采用优质原材料LDPE低密度聚乙烯、MLLCPE茂金属、HDPE高密度聚乙烯和LLDPE线性聚乙烯制成，可以保持热收缩膜延伸率大、自粘性好和透明度高的特点，并通过四个阶段温度高温混炼和双风口冷却风环有效冷却，具有良好撕裂强度、断裂拉伸强度、断裂伸长率、冲击强度等物理机械性能，值得推广。
附图说明
图1为本发明所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺的流程图。
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。
实施例1：
如图1所示，本实施例的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于，包括下述工艺步骤：
(1)原材料准备：该PE热收缩膜的生产原材料包括如下质量分数：LDPE低密度聚乙烯75％、MLLCPE茂金属10％、HDPE高密度聚乙烯10％、LLDPE线性聚乙烯5％，其中所述LDPE低密度聚乙烯为熔融指数为0.3g/10min，密度为0.93g/cm3的低密度聚乙烯,所述MLLCPE茂金属为D60,美国Exxon公司生产，所述HDPE高密度聚乙烯为熔融指数为0.4g/10min，密度为0.92g/cm3的高密度聚乙烯；
(2)混料处理：将原材料加入卧式高速混合机中，混料时长为15min，转速为180rpm；
(3)高温混炼：将步骤(2)得到的混料放入主机中进行高温混炼，混炼设有4个阶段，每个阶段混炼时长为30min，其中高温混炼四个阶段温度分别为170℃、180℃、190℃、200℃；
(4)模具成型和冷却处理：将步骤(3)得到的物料通过双螺杆挤出机挤出，挤出温度为130℃-150℃，并通过吹膜机的双风口冷却风环进行冷却，其中高温混炼温度为180℃；
(5)半成品处理：将冷却后的物料上牵引至拉伸烘箱，烘干温度为100℃，并通过辅机分切物料，得到薄膜半成品，其中横向拉伸倍数为6，纵向拉伸倍数6。
(6)检验和包装成品：通过复卷机对得到的薄膜半成品进行检验，检验通过后对其进行收卷成膜，并进行包装出库，其中打孔孔径为0.1cm。
实施例2：其余与实施例1相同，不同之处在于所述步骤(1)中生产原材料包括如下质量分数：LDPE低密度聚乙烯78％、MLLCPE茂金属7％、HDPE高密度聚乙烯10％、LLDPE线性聚乙烯5％，其中所述LDPE低密度聚乙烯为熔融指数为0.4g/10min,所述HDPE高密度聚乙烯为熔融指数为0.5g/10min，密度为0.94g/cm3的高密度聚乙烯，所述步骤(4)中烘干温度为95℃，通过双风口冷却风环将物料冷却至35℃，所述步骤(5)中横向拉伸倍数为6，纵向拉伸倍数6.5，所述步骤(6)中打孔孔径为1cm。
实施例3：其余与实施例1相同，不同之处在于所述步骤(1)中生产原材料包括如下质量分数：LDPE低密度聚乙烯80％、MLLCPE茂金属5％、HDPE高密度聚乙烯10％、LLDPE线性聚乙烯5％，其中所述LDPE低密度聚乙烯为熔融指数为0.5g/10min,所述HDPE高密度聚乙烯为熔融指数为0.6g/10min，密度为0.96g/cm3的高密度聚乙烯，所述步骤(4)中烘干温度为90℃，通过双风口冷却风环将物料冷却至40℃，所述步骤(5)中横向拉伸倍数为7，纵向拉伸倍数6.5，所述步骤(6)中打孔孔径为2.5cm。
经过以上工艺步骤后，取出PE热收缩膜样品，得到以下数据：
由以上数据可知，本发明所取得的产品可以保持热收缩膜延伸率大、自粘性好和透明度高的特点，且具有良好撕裂强度、断裂拉伸强度、断裂伸长率、冲击强度等物理机械性能，光泽度也达到标准，可以起到有效保护作用，制备工艺简单，易实现大规模生产。
显然本发明具体实现并不受上述方式的限制，只要采用了本发明的方法构思和技术方案进行的各种非实质性的改进，或未经改进将本发明的构思和技术方案直接应用于其它场合的，均在本发明的保护范围之内。

Claims (7)

1.一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于，包括下述工艺步骤：
(1)原材料准备：该PE热收缩膜的生产原材料包括如下质量分数：LDPE低密度聚乙烯75％-80％、MLLCPE茂金属5％-10％、HDPE高密度聚乙烯10％、LLDPE线性聚乙烯5％；
(2)混料处理：将原材料加入卧式高速混合机中，混料时长为15min，转速为150rpm-200rpm；
(3)高温混炼：将步骤(2)得到的混料放入主机中进行高温混炼，混炼设有4个阶段，每个阶段混炼时长为30min；
(4)模具成型和冷却处理：将步骤(3)得到的物料通过双螺杆挤出机挤出，挤出温度为130℃-150℃，并通过吹膜机的双风口冷却风环进行冷却；
(5)半成品处理：将冷却后的物料上牵引至拉伸烘箱，烘干温度为90℃-100℃，并通过辅机分切物料，得到薄膜半成品。
(6)检验和包装打孔成型：通过复卷机对得到的薄膜半成品进行检验，检验通过后对其进行收卷成膜，并进行打孔，再包装出库。
2.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(1)中所述LDPE低密度聚乙烯为熔融指数为0.3g/10min-0.5g/10min，密度为0.93g/cm3的低密度聚乙烯,所述MLLCPE茂金属为D60,美国Exxon公司生产。
3.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(1)中所述HDPE高密度聚乙烯为熔融指数为0.4g/10min-0.6g/10min，密度为0.92g/cm3-0.965g/cm3的高密度聚乙烯。
4.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(3)中高温混炼温度为170℃-200℃。
5.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(4)中通过双风口冷却风环将物料冷却至30℃-40℃。
6.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(5)中横向拉伸倍数为6-7，纵向拉伸倍数6-6.5。
7.根据权利要求1所述的一种用于烟草卷烟的PE热收缩膜包装袋生产工艺，其特征在于：所述步骤(6)中打孔孔径为0.1-2.5cm。
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CN106750823A (zh) * 2017-01-19 2017-05-31 安徽致达包装有限公司 一种pe热收缩薄膜及其生产工艺
CN107141553A (zh) * 2017-05-22 2017-09-08 安徽致达包装有限公司 一种打孔pe热收缩薄膜
CN107501680A (zh) * 2017-08-30 2017-12-22 桐城市华猫软膜有限公司 一种打孔pe热收缩膜
CN108773095A (zh) * 2018-06-29 2018-11-09 南雄市金叶包装材料有限公司 烟用pe热收缩膜生产设备

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