CN106739340B - 一种高阻隔耐高温灭菌后不卷的包装膜 - Google Patents

一种高阻隔耐高温灭菌后不卷的包装膜 Download PDF

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CN106739340B
CN106739340B CN201710057932.3A CN201710057932A CN106739340B CN 106739340 B CN106739340 B CN 106739340B CN 201710057932 A CN201710057932 A CN 201710057932A CN 106739340 B CN106739340 B CN 106739340B
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layers
layer
film
upper film
cpp
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CN106739340A (zh
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张爱明
宓海华
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Zhejiang Mingkai New Material Co ltd
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Jiaxing Ming Yue Packing Materials Co Ltd
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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
    • B32B27/06—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
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Abstract

本发明公开了一种高阻隔耐高温灭菌后不卷的包装膜，包括上膜、下膜，上膜表面经物理交联处理使其熔点达到180‑190℃，上膜包括CPP层以及在该CPP层的下表面依次设置的第一粘接层、第一PA层、油墨层、第二粘接层、PE层，下膜包括CPP、第三粘接层以及九层共挤层，上膜和下膜热封时，上膜的PE层和下膜的九层共挤层热封结合。通过将上膜表面经物理交联处理使得上膜的熔点可达到180度左右，在目前的杀菌消毒环境下，其可以保持平整性，不发生卷曲，采用九层共挤层，在九层共挤层中设置多层PE层，能在保持盖层功能的前提下，实现各层厚度可控，进而实现成本可控，其中具有EVOH层和PA层，EVOH层具有很强的阻隔性，PA层具有抗穿刺性。

Description

一种高阻隔耐高温灭菌后不卷的包装膜
技术领域
本发明涉及包装膜，具体涉及一种高阻隔耐高温灭菌后不卷的包装膜。
背景技术
现有食品包装膜，如台式烤肠的包装膜，其具有上膜和下模，在烤肠包装后，包装膜易发生卷曲，特别是杀菌消毒后，卷曲严重，主要原因有杀菌消毒过程需要较高的温度，而目前的包装膜其熔点为120度，因此在消毒过程中极易发生卷曲。
发明内容
本发明针对上述问题，提供了一种高阻隔耐高温灭菌后不卷的包装膜，通过将上膜表面经物理交联处理使得上膜的熔点可达到180度左右，在目前的杀菌消毒环境下，其可以保持平整性，不发生卷曲，采用九层共挤层，在九层共挤层中设置多层PE层，能在保持盖层功能的前提下，实现各层厚度可控，进而实现成本可控，其中具有EVOH层和PA层，EVOH层具有很强的阻隔性，PA层具有抗穿刺性。
为解决上述技术问题，本发明采用的一个技术方案是：一种高阻隔耐高温灭菌后不卷的包装膜，包括上膜、下膜，上膜表面经物理交联处理使其熔点达到180-190℃，上膜包括CPP层以及在该CPP层的下表面依次设置的第一粘接层、第一PA层、油墨层、第二粘接层、PE层，CPP层包括位于最上层的CPP共聚层、PP和POP共混的中间层以及MLLDPE、LDPE、PB共混的下层，下膜包括CPP、第三粘接层以及九层共挤层，九层共挤层包括依次设置的第一PE层、第二PE层、第三PE层、第二PA层、EVOH层、第三PA层、第三PE层、第四PE层、第五PE层，上膜和下膜热封时，上膜的PE层和下膜的九层共挤层热封结合。
作为上述方案的优选，上膜的中间层中包括以下质量分数的原料：40-45％的PP和55-60％的POP。
作为上述方案的优选，上膜的下层包括以下质量分数的原料：20-25％的MLLDPE、30-40％的LDPE、35-50％的PB。
本发明的有益效果是：通过将上膜表面经物理交联处理使得上膜的熔点可达到180度左右，在目前的杀菌消毒环境下，其可以保持平整性，不发生卷曲，采用九层共挤层，在九层共挤层中设置多层PE层，能在保持盖层功能的前提下，实现各层厚度可控，进而实现成本可控，其中具有EVOH层和PA层，EVOH层具有很强的阻隔性，PA层具有抗穿刺性。
附图说明
图1是本发明的结构示意图。
具体实施方式
下面结合实施例，对本发明的具体实施方式作进一步描述。
如图1所示，一种高阻隔耐高温灭菌后不卷的包装膜，包括上膜1、下膜2，上膜为平整膜，下膜上具有储物腔21，上膜和下膜热封结合，上膜表面经物理交联处理使其熔点达到180-190℃，可保证该包装膜在高温杀菌效果过程中保持良好的平整性，不发生卷曲，上膜包括CPP层以及在该CPP层的下表面依次设置的第一粘接层、第一PA层、油墨层、第二粘接层、PE层，CPP层包括位于最上层的CPP共聚层、PP和POP共混的中间层以及MLLDPE、LDPE、PB共混的下层，下膜包括CPP、第三粘接层以及九层共挤层，其中第三粘接层具有良好的弹性，在下膜发生形变后能保证成型后的层间强度，九层共挤层包括由上向下依次设置的第一PE层、第二PE层、第三PE层、第二PA层、EVOH层、第三PA层、第三PE层、第四PE层、第五PE层，上膜和下膜热封时，上膜的PE层和下膜的九层共挤层热封结合。
九层共挤层采用五层PE层结构，可以保证功能性的前提下实现配方中各层厚度的控制，从而实现成本可控(PE相对便宜)。
其中，PA具有很强的抗穿刺性能，采用双层PA，能有效放置包有骨头的肉制品穿破包装袋。
其中EVOH层具有良好的阻隔性。
上膜的中间层中包括以下质量分数的原料：40-45％的PP和55-60％的POP。
上膜的下层包括以下质量分数的原料：20-25％的MLLDPE、30-40％的LDPE、35-50％的PB。
对于本领域的技术人员来说，依然可以对前述各实施例所记载的技术方案进行修改，或对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (3)

1.一种高阻隔耐高温灭菌后不卷的包装膜，其特征在于，包括上膜、下膜，上膜表面经物理交联处理使其熔点达到180-190℃，上膜包括CPP层以及在该CPP层的下表面依次设置的第一粘接层、第一PA层、油墨层、第二粘接层、PE层，CPP层包括位于最上层的CPP共聚层、PP和POP共混的中间层以及MLLDPE、LDPE、PB共混的下层，下膜包括CPP、第三粘接层以及九层共挤层，九层共挤层包括依次设置的第一PE层、第二PE层、第三PE层、第二PA层、EVOH层、第三PA层、第三PE层、第四PE层、第五PE层，上膜和下膜热封时，上膜的PE层和下膜的九层共挤层热封结合。
2.如权利要求1所述的高阻隔耐高温灭菌后不卷的包装膜，其特征在于，上膜的中间层中包括以下质量分数的原料：40-45％的PP和55-60％的POP。
3.如权利要求1所述的高阻隔耐高温灭菌后不卷的包装膜，其特征在于，上膜的下层包括以下质量分数的原料：20-25％的MLLDPE、30-40％的LDPE、35-50％的PB。
CN201710057932.3A 2017-01-23 2017-01-23 一种高阻隔耐高温灭菌后不卷的包装膜 Active CN106739340B (zh)

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Patentee before: JIAXING MING YUE PACKING MATERIALS Co.,Ltd.