CN109263221A - 一种高韧性共挤阻隔薄膜材料 - Google Patents

一种高韧性共挤阻隔薄膜材料 Download PDF

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CN109263221A
CN109263221A CN201811387973.XA CN201811387973A CN109263221A CN 109263221 A CN109263221 A CN 109263221A CN 201811387973 A CN201811387973 A CN 201811387973A CN 109263221 A CN109263221 A CN 109263221A
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layer
film
barrier
polythene
metallocene polyethylene
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张雨
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为21%的聚乙烯PE层、15%的茂金属聚乙烯层、5%的TiC粘合层、18%的乙烯‑乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、15%的茂金属聚乙烯层和21%的聚乙烯PE层，本发明目的在于提供一种高韧性共挤阻隔薄膜材料，该薄膜通过配方的改良和优化，采用乙烯‑乙烯醇共聚物EVOH阻隔层替代传统的BOPA层，提高了薄膜阻隔性性能，并采用聚乙烯PE层和茂金属聚乙烯层，增加了薄膜的力学稳定性，同时通过配方的改良和优化，把各层材料通过共挤工艺成型，明显提高了薄膜的抗拉强度、粘合性、耐穿刺性和阻隔性性能，并且该薄膜在热封强度、开口性、抗污染性上都有明显提高。

Description

一种高韧性共挤阻隔薄膜材料
技术领域
本发明涉及一种薄膜材料，具体涉及一种高韧性共挤阻隔薄膜材料。
背景技术
目前市场上的共挤阻隔薄膜材料，由于选料、配比和工艺方面的原因，经常在使用过程中出现阻隔性、耐穿刺性、热封强度、开口性、粘合性、抗污染性不高等问题。例如现有产品中共挤膜基本为对称PA(尼龙)结构，其阻隔性性能不高，而且现有产品中PE层仅采用一般低密度聚乙烯+线性低密度聚乙烯，这在一定程度上影响了产品力学性能，导致在后续制袋或者使用的时候，在施加张力情况下由于强度不高而出现拉伸现象，导致破包率高，收卷不齐，封边起皱，加大损耗现象。
发明内容
为解决上述存在的问题，本发明目的在于提供一种高韧性共挤阻隔薄膜材料，该薄膜通过配方的改良和优化，采用乙烯-乙烯醇共聚物EVOH阻隔层替代传统的BOPA层，提高了薄膜阻隔性性能，并采用聚乙烯PE层和茂金属聚乙烯层，增加了薄膜的力学稳定性，同时通过配方的改良和优化，把各层材料通过共挤工艺成型，明显提高了薄膜的抗拉强度、粘合性、耐穿刺性和阻隔性性能，并且该薄膜在热封强度、开口性、抗污染性上都有明显提高。
本发明的上述目的通过以下技术方案实现：该薄膜为层状结构，各层依次为21%的聚乙烯PE层、15%的茂金属聚乙烯层、5%的TiC粘合层、18%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、15%的茂金属聚乙烯层和21%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
与现有技术相比，本发明的有益效果：
1、本发明采用乙烯-乙烯醇共聚物EVOH阻隔层替代传统的BOPA层，提高了薄膜阻隔性性能，并采用聚乙烯PE层和茂金属聚乙烯层，增加了薄膜的力学稳定性，并通过配方的改良和优化，把各层材料通过共挤工艺成型，使薄膜的粘合性不断加强，最终得到具有较高抗拉强度、粘合性、耐穿刺性和阻隔性性能的薄膜，并且其热封强度、开口性、抗污染性上都有明显提高，更能适应大包装液体灌装对薄膜高阻隔性能的要求；
2、本发明提供的高韧性共挤阻隔薄膜材料，使用效果比传统薄膜在使用时破包率降低约70%，节约包装原材料约35%，如推广实用，不仅可以解决液体大袋包装难题，对产品的广泛推广起到关键作用，而且可以节约大量的社会资源，具有良好的社会效益。
具体实施方式：
为了更好的理解本发明，下面结合实施例进一步阐述本发明的内容，但本发明的内容并不仅仅局限于下述的实施例。
实施例1
一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为21%的聚乙烯PE层、15%的茂金属聚乙烯层、5%的TiC粘合层、18%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、15%的茂金属聚乙烯层和21%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
实施例2
一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为15%的聚乙烯PE层、10%的茂金属聚乙烯层、5%的TiC粘合层、5%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、10%的茂金属聚乙烯层和15%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
实施例3
一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为60%的聚乙烯PE层、50%的茂金属聚乙烯层、5%的TiC粘合层、25%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、50%的茂金属聚乙烯层和60%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
实施例4
一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为21%的聚乙烯PE层、15%的茂金属聚乙烯层、5%的TiC粘合层、18%的PA层、5%的TiC粘合层、15%的茂金属聚乙烯层和21%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
实施例5
一种高韧性共挤阻隔薄膜材料，该薄膜为层状结构，各层依次为30%的聚乙烯PE层、5%的TiC粘合层、18%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、30%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
表1 实施例1～5提供的共挤阻隔薄膜材料的包封率
实施例 1 2 3 4 5
包封率（%） 95.17±1.90 89.07±2.10 87.15±3.80 76.17±1.50 78.0394±1.60
由表5可知：实施例1提供的共挤阻隔薄膜材料包封率最高，而且经过计算实施例1使用效果比传统薄膜在使用时破包率降低约70%，节约包装原材料约35%。
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。

Claims (1)

1.一种高韧性共挤阻隔薄膜材料，其特征在于，该薄膜为层状结构，各层依次为21%的聚乙烯PE层、15%的茂金属聚乙烯层、5%的TiC粘合层、18%的乙烯-乙烯醇共聚物EVOH阻隔层、5%的TiC粘合层、15%的茂金属聚乙烯层和21%的聚乙烯PE层，该薄膜的各层通过共挤工艺成型。
CN201811387973.XA 2018-11-21 2018-11-21 一种高韧性共挤阻隔薄膜材料 Pending CN109263221A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113211916A (zh) * 2021-04-19 2021-08-06 信安细川(南京)包装有限公司 糊状非附着枕头袋用灌装膜及制备工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112226A (zh) * 2013-02-19 2013-05-22 黄山永新股份有限公司 七层共挤高阻隔透明膜及其制备方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112226A (zh) * 2013-02-19 2013-05-22 黄山永新股份有限公司 七层共挤高阻隔透明膜及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113211916A (zh) * 2021-04-19 2021-08-06 信安细川(南京)包装有限公司 糊状非附着枕头袋用灌装膜及制备工艺

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