CN107400283A - 一种pe打孔热收缩膜及其生产工艺 - Google Patents

一种pe打孔热收缩膜及其生产工艺 Download PDF

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CN107400283A
CN107400283A CN201710764874.8A CN201710764874A CN107400283A CN 107400283 A CN107400283 A CN 107400283A CN 201710764874 A CN201710764874 A CN 201710764874A CN 107400283 A CN107400283 A CN 107400283A
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density polyethylene
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方小梅
吴金明
张启红
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Tongcheng Cat Soft Film Co Ltd
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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Abstract

本发明公开了一种PE打孔热收缩膜及其生产工艺，它由以下重量份的原料制成：低密度聚乙烯100份，聚琥珀酸丁二酯20‑25份，聚乙烯醇2‑6份，丙烯酸酯2‑6份，纳米二氧化钛2.4‑2.6份，石蜡1.2‑1.5份，贝壳粉2‑3份，HDPE高密度聚乙烯11‑13份，纳米碳化钙1‑2份，氧化硅2‑3份，滑石粉1‑2份。本发明在全国烟草行业率先发明生产供应给烟草公司使用打孔的PE热收缩膜，其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。

Description

一种PE打孔热收缩膜及其生产工艺
技术领域
本发明属于包装材料技术领域，具体涉及一种PE热收缩薄膜及其生产工艺。
背景技术
PE热收缩膜广泛适用于烟酒类、易拉罐类、矿泉水类、各种饮料类、布匹等产品的整件集合包装，其具有柔韧性好,抗撞击、抗撕裂性强，不易破损、不怕潮、收缩率大等优点，其对堆放在托板上的货物进行缠绕包装，使包装物更加稳固整洁，更超强防水，被广泛使用于外贸出口、造纸、五金、塑料、化工、建材、食品医药行业。
现有的PE热收缩膜在强度和韧性方面有局限，一般采用HDPE来提高强度，但是HDPE会使热收缩膜的韧性大幅度下降，烟类包装一般整条包装后再集合包装，但是对于两条以上的集合包装PE热收缩膜，现有的PE热收缩膜在包装运输过程中容易破裂，且损耗量大，因此如何提高热收缩膜的拉伸和韧度，以及节约集合包装所用PE热收缩膜，成为了亟待解决的问题。
发明内容
本发明的目的在于提供PE打孔热收缩膜及其生产工艺及其生产工艺。
本发明的目的可以通过以下技术方案实现：
一种PE打孔热收缩膜，它由以下重量份的原料制成：低密度聚乙烯100份，聚琥珀酸丁二酯20-25份，聚乙烯醇2-6份，丙烯酸酯2-6份，纳米二氧化钛2.4-2.6份，石蜡1.2-1.5份，贝壳粉2-3份，HDPE高密度聚乙烯11-13份，纳米碳化钙1-2份，氧化硅2-3份，滑石粉1-2份。
优选的，所述的一种PE打孔热收缩膜，它由以下重量份的原料制成：低密度聚乙烯100份，聚琥珀酸丁二酯22份，聚乙烯醇4份，丙烯酸酯4份，纳米二氧化钛2.5份，石蜡1.5份，贝壳粉2份，HDPE高密度聚乙烯12份，纳米碳化钙2份，氧化硅2份，滑石粉1份。
优选的，所述HDPE高密度聚乙烯的熔融指数MI为0.02以下，密度为0.950g/cm3以上。
一种PE打孔热收缩膜生产工艺，其主要包括如下步骤：
(1)按照上述重量份数称取原料；
(2)在75-85℃往反应釜中按比例加入混合原料，并以150-180rpm转速搅拌20-30min；
(3)将反应釜内温度升高至280-300℃，压力降至60pa以下，在此条件下反应1-3h得到聚合熔体，然后将制备的聚合熔体挤出、切粒、干燥，得到PE聚酯切片；
(4)将上述PE聚酯切片熔融挤出、模头铸片、铸片缠卷、双向拉伸、冷却定型、测量厚度、收卷、分切复卷，包装、成品。
本发明的有益效果：本发明在全国烟草行业率先发明生产供应给烟草公司使用打孔的PE热收缩膜，其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，PE热收缩膜打孔主要用于香烟2条以上的集合包装，有效节约材料，减少PE热收缩膜的使用量，可降低10.79％包装成本；使用打孔PE热收缩膜有直观感，在包装外从打孔处可以看到包装内的商品，不影响产品宣传。
具体实施方式
下面结合具体实施例对本发明作进一步详细描述。
实施例1：
称取低密度聚乙烯100kg，聚琥珀酸丁二酯20kg，聚乙烯醇2kg，丙烯酸酯2kg，纳米二氧化钛2.4kg，石蜡1.2kg，贝壳粉2kg，HDPE高密度聚乙烯11kg，纳米碳化钙1kg，氧化硅2kg，滑石粉1kg。
按如下操作步骤制备：
(1)按照上述重量份数称取原料；
(2)在75-85℃往反应釜中按比例加入混合原料，并以150-180rpm转速搅拌20-30min；
(3)将反应釜内温度升高至280-300℃，压力降至60pa以下，在此条件下反应1-3h得到聚合熔体，然后将制备的聚合熔体挤出、切粒、干燥，得到PE聚酯切片；
(4)将上述PE聚酯切片熔融挤出、模头铸片、铸片缠卷、双向拉伸、冷却定型、测量厚度、收卷、分切复卷，包装、成品。
实施例2：
称取低密度聚乙烯100kg，聚琥珀酸丁二酯25kg，聚乙烯醇6kg，丙烯酸酯6kg，纳米二氧化钛2.6kg，石蜡1.5kg，贝壳粉3kg，HDPE高密度聚乙烯13kg，纳米碳化钙2kg，氧化硅3kg，滑石粉2kg。
按如下操作步骤制备：
(1)按照上述重量份数称取原料；
(2)在75-85℃往反应釜中按比例加入混合原料，并以150-180rpm转速搅拌20-30min；
(3)将反应釜内温度升高至280-300℃，压力降至60pa以下，在此条件下反应1-3h得到聚合熔体，然后将制备的聚合熔体挤出、切粒、干燥，得到PE聚酯切片；
(4)将上述PE聚酯切片熔融挤出、模头铸片、铸片缠卷、双向拉伸、冷却定型、测量厚度、收卷、分切复卷，包装、成品。
实施例3：
称取低密度聚乙烯100kg，聚琥珀酸丁二酯22kg，聚乙烯醇4kg，丙烯酸酯4kg，纳米二氧化钛2.5kg，石蜡1.5kg，贝壳粉2kg，HDPE高密度聚乙烯12kg，纳米碳化钙2kg，氧化硅2kg，滑石粉1kg。
按如下操作步骤制备：
(1)按照上述重量份数称取原料；
(2)在75-85℃往反应釜中按比例加入混合原料，并以150-180rpm转速搅拌20-30min；
(3)将反应釜内温度升高至280-300℃，压力降至60pa以下，在此条件下反应1-3h得到聚合熔体，然后将制备的聚合熔体挤出、切粒、干燥，得到PE聚酯切片；
(4)将上述PE聚酯切片熔融挤出、模头铸片、铸片缠卷、双向拉伸、冷却定型、测量厚度、收卷、分切复卷，包装、成品。
以上内容仅仅是对本发明所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明的构思或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。

Claims (4)

1.一种PE打孔热收缩膜，其特征在于，它由以下重量份的原料制成：低密度聚乙烯100份，聚琥珀酸丁二酯20-25份，聚乙烯醇2-6份，丙烯酸酯2-6份，纳米二氧化钛2.4-2.6份，石蜡1.2-1.5份，贝壳粉2-3份，HDPE高密度聚乙烯11-13份，纳米碳化钙1-2份，氧化硅2-3份，滑石粉1-2份。
2.根据权利要求1所述的一种PE打孔热收缩膜，其特征在于，它由以下重量份的原料制成：低密度聚乙烯100份，聚琥珀酸丁二酯22份，聚乙烯醇4份，丙烯酸酯4份，纳米二氧化钛2.5份，石蜡1.5份，贝壳粉2份，HDPE高密度聚乙烯12份，纳米碳化钙2份，氧化硅2份，滑石粉1份。
3.根据权利要求1所述的一种PE打孔热收缩膜，其特征在于，所述HDPE高密度聚乙烯的熔融指数MI为0.02以下，密度为0.950g/cm3以上。
4.一种PE打孔热收缩膜生产工艺，其特征在于，其主要包括如下步骤：
(1)按照上述重量份数称取原料；
(2)在75-85℃往反应釜中按比例加入混合原料，并以150-180rpm转速搅拌20-30min；
(3)将反应釜内温度升高至280-300℃，压力降至60pa以下，在此条件下反应1-3h得到聚合熔体，然后将制备的聚合熔体挤出、切粒、干燥，得到PE聚酯切片；
(4)将上述PE聚酯切片熔融挤出、模头铸片、铸片缠卷、双向拉伸、冷却定型、测量厚度、收卷、分切复卷，包装、成品。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108192188A (zh) * 2017-12-26 2018-06-22 上海邦中新材料有限公司 一种可降解聚乙烯包装膜及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106317568A (zh) * 2016-08-25 2017-01-11 太仓市鸿运包装材料有限公司 一种抗紫外线pe热收缩膜及其制备方法
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106317568A (zh) * 2016-08-25 2017-01-11 太仓市鸿运包装材料有限公司 一种抗紫外线pe热收缩膜及其制备方法
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108192188A (zh) * 2017-12-26 2018-06-22 上海邦中新材料有限公司 一种可降解聚乙烯包装膜及其制备方法

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Application publication date: 20171128