CN113147139A - 一种包装用bopp镀铝基膜 - Google Patents

一种包装用bopp镀铝基膜 Download PDF

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CN113147139A
CN113147139A CN202110277432.7A CN202110277432A CN113147139A CN 113147139 A CN113147139 A CN 113147139A CN 202110277432 A CN202110277432 A CN 202110277432A CN 113147139 A CN113147139 A CN 113147139A
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bopp
base film
parts
temperature
heat
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王辉煌
项晓波
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Ruian Dongwei Plastic Co Ltd
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Ruian Dongwei Plastic Co Ltd
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    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/20—Metallic material, boron or silicon on organic substrates
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Abstract

本发明涉及包装基膜技术领域，且公开了一种包装用BOPP镀铝基膜，依次由热封层，芯层，基膜层组成，所述热封层的原料按重量份包括：有机抗粘合剂3‑4份，马来酸酐接枝改性物3‑5份，热封材料95‑100份；所述芯层的原料按重量份包括：阻抗静电材料1‑2份，均聚丙烯99‑102份；所述基膜层为BOPP镀铝基膜层，其原料按重量份包括：乙烯‑辛烯共聚物1‑5份，PP原料100份。通过在BOPP基膜层的最外层封装有热封层，能够借助于热封层材料强大的隔热性能，将外界的热量隔绝在BOPP基膜层的外侧，保证了BOPP基膜层内部处于一个长期适宜的温度中，使得BOPP基膜层内部包装的物品不易被热量损坏，达到了BOPP基膜长时间保存物品的效果。

Description

一种包装用BOPP镀铝基膜
技术领域
本发明涉及包装基膜技术领域，具体为一种包装用 BOPP 镀铝基膜。
背景技术
BOPP 基膜即双向拉伸聚丙烯基膜，BOPP 基膜的生产是将高分子聚丙烯的熔体首先通过狭长机头制成片材或厚膜，然后对厚膜进行横向和纵向的拉伸，通过电晕水浴处理制成基膜。
目前的 BOPP 基膜易破碎，在进行包装之后，难以进行长时间的保存，极易被损坏，且 BOPP 基膜不具有隔热的性能，当外界温度变化后，难以做到对内层物品的保护，故而我们提出了一种包装用 BOPP 镀铝基膜。
发明内容
为实现上述目的，本发明提供如下技术方案：一种包装用 BOPP 镀铝基膜，依次由热封层，芯层，基膜层组成，所述热封层的原料按重量份包括：有机抗粘合剂 3-4 份，马来酸酐接枝改性物 3-5 份，热封材料 95-100 份；所述芯层的原料按重量份包括：阻抗静电材料 1-2 份，均聚丙烯 99-102 份；所述基膜层为 BOPP 镀铝基膜层，其原料按重量份包括：乙烯-辛烯共聚物 1-5 份，PP原料 100 份。
S1、热封层的制备方法为将热封材料加入到去离子水溶液中，升高温度到 95-100℃，待热封材料融化之后，将马来酸酐接枝改性物和有机抗粘合剂添加，升高温度至 220-280℃，待去离子水溶液蒸发之后，即得到三种材质的混合溶液，将混合溶液在 25-30℃的环境温度下冷却为固态即可得到热封层；
S2、芯层的制备方法为将阻抗静电材料和均聚丙烯材料一同投入到挤出机内部，将温度提高到 240-255℃，直到材料融化混合在一起，控制温度不变化，保证材料处于熔融状态；
S3、基膜层的制备方法为将乙烯-辛烯共聚物与 PP 原料按照 1:100-5:100的分量比混合，控制温度在 62-88℃，保持环境为真空状态，可以得到改性处理后的 PP 原料，随后控制温度在 175-192℃将 PP 原料熔融塑形，将 PP 原料熔融物投入到挤压成型机内部，挤压成三层BOPP基材片，控制温度在20-25℃，使 BOPP 基材片表面冷却，提高环境温度到 110-125℃，对 BOPP 基材片进行横向拉伸，随后进行热处理和冷却处理，随后再一起提升温度到 110-125℃，对 BOPP 基材片进行纵向拉伸，再一次进行热处理和冷却，得到BOPP 基材薄片，随后对 BOPP 基材薄片进行表面电晕处理，对电晕处理后的 BOPP 基材薄片进行牵引收卷，随后对牵引后的 BOPP 基材薄片进行时效处理，对时效处理后的 BOPP基材薄片进行分切，将分切后的 BOPP 基材薄片投入到真空镀铝设备的蒸发舟预热，控制铝丝传送速度为 350-1250mm/min，真空镀铝设备绕卷速度为 3.6-7.4m/s 后，对 BOPP 基膜进行镀铝处理，即可得到 BOPP 镀铝基膜层；
S4、将 S1 和 S3 中制备的热封层和基膜层分别加入到两台辅助挤出机器内部，控制温度在 270-330℃，将其加热为熔融状态，将 S2 中获得的熔融物和上述的熔融物过滤出来后，经过连接杆将三者一同传输到 T 型模头处汇合挤出，对挤出的混合基膜进行水浴冷却处理，控制水浴温度为 22-32℃，从而可以得到 BOPP 镀铝基膜。
优选的，所述 S1 中去离子水指的是除去了呈现离子形式杂质后的纯水。
优选的，所述 S2 在制备芯层后，需要将芯层放置在温度为 240-255℃的挤压成型机器内部，等待热封层和基膜层进入辅助挤压机内部，随后一同进行混合挤压。
优选的，所述 S3 中电晕处理时，电极电压的强度为 7.0-8.6kv，电晕处理的强度为 40-43dym/cm，同时控制温度在 25-42℃，以及生产线速度为162-188m/min。
优选的，所述 S3 中的时效处理就是对基膜层进行静置冷却处理，控制时效处理的温度在 24-36℃，控制时间为 2-3 天。
优选的，所述 S4 中主挤压成型机的过滤网为 400 目，辅助挤压成型机的过滤网为 150 目。
有益效果
与现有技术相比，本发明提供了一种包装用 BOPP 镀铝基膜，具备以下有益效果：
1、该包装用 BOPP 镀铝基膜，通过在 BOPP 基膜层的外表面镀上一层铝层，借助于铝的金属性质，不仅能够增强 BOPP 基膜层的伸缩性，且不会改变 BOPP基膜层的流动性，达到了 BOPP 基膜层不易被损坏，且不影响 BOPP 基膜本身具有的物理性质。
2、该包装用 BOPP 镀铝基膜，通过在 BOPP 基膜层的最外层封装有热封层，能够借助于热封层材料强大的隔热性能，将外界的热量隔绝在 BOPP 基膜层的外侧，保证了BOPP 基膜层内部处于一个长期适宜的温度中，使得 BOPP 基膜层内部包装的物品不易被热量损坏，达到了 BOPP 基膜长时间保存物品的效果。
具体实施方式
下面将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。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例 1：
一种包装用 BOPP 镀铝基膜，依次由热封层，芯层，基膜层组成，热封层的原料按重量份包括：有机抗粘合剂 3 份，马来酸酐接枝改性物 3 份，热封材料 95 份；芯层的原料按重量份包括：阻抗静电材料 1 份，均聚丙烯 99 份；基膜层为 BOPP 镀铝基膜层，其原料按重量份包括：乙烯-辛烯共聚物 1 份，PP原料 100 份。
S1、热封层的制备方法为将热封材料加入到去离子水溶液中，升高温度到 95℃，待热封材料融化之后，将马来酸酐接枝改性物和有机抗粘合剂添加，升高温度至 220℃，待去离子水溶液蒸发之后，即得到三种材质的混合溶液，将混合溶液在 25℃的环境温度下冷却为固态即可得到热封层；
S2、芯层的制备方法为将阻抗静电材料和均聚丙烯材料一同投入到挤出机内部，将温度提高到 240℃，直到材料融化混合在一起，控制温度不变化，保证材料处于熔融状态；
S3、基膜层的制备方法为将乙烯-辛烯共聚物与 PP 原料按照 1:100 的分量比混合，控制温度在 62℃，保持环境为真空状态，可以得到改性处理后的 PP原料，随后控制温度在 175℃将 PP 原料熔融塑形，将 PP 原料熔融物投入到挤压成型机内部，挤压成三层BOPP 基材片，控制温度在 20℃，使 BOPP 基材片表面冷却，提高环境温度到 110℃，对BOPP 基材片进行横向拉伸，随后进行热处理和冷却处理，随后再一起提升温度到 110℃，对 BOPP 基材片进行纵向拉伸，再一次进行热处理和冷却，得到 BOPP 基材薄片，随后对BOPP 基材薄片进行表面电晕处理，对电晕处理后的 BOPP 基材薄片进行牵引收卷，随后对牵引后的 BOPP 基材薄片进行时效处理，对时效处理后的 BOPP 基材薄片进行分切，将分切后的 BOPP 基材薄片投入到真空镀铝设备的蒸发舟预热，控制铝丝传送速度为 350mm/min，真空镀铝设备绕卷速度为 3.6m/s 后，对 BOPP 基膜进行镀铝处理，即可得到 BOPP镀铝基膜层；
S4、将 S1 和 S3 中制备的热封层和基膜层分别加入到两台辅助挤出机器内部，控制温度在 270℃，将其加热为熔融状态，将 S2 中获得的熔融物和上述的熔融物过滤出来后，经过连接杆将三者一同传输到 T 型模头处汇合挤出，对挤出的混合基膜进行水浴冷却处理，控制水浴温度为 22℃，从而可以得到BOPP 镀铝基膜。
其中，S1 中去离子水指的是除去了呈现离子形式杂质后的纯水。
其中，S2 在制备芯层后，需要将芯层放置在温度为 240℃的挤压成型机器内部，等待热封层和基膜层进入辅助挤压机内部，随后一同进行混合挤压。
其中，S3 中电晕处理时，电极电压的强度为 7.0kv，电晕处理的强度为40dym/cm，同时控制温度在 25℃，以及生产线速度为 162m/min。
其中，S3 中的时效处理就是对基膜层进行静置冷却处理，控制时效处理的温度在24℃，控制时间为 2 天。
其中，S4 中主挤压成型机的过滤网为 400 目，辅助挤压成型机的过滤网为 150目。
实施例 2：
一种包装用 BOPP 镀铝基膜，依次由热封层，芯层，基膜层组成，热封层的原料按重量份包括：有机抗粘合剂 4 份，马来酸酐接枝改性物 5 份，热封材料 100 份；芯层的原料按重量份包括：阻抗静电材料 2 份，均聚丙烯 102份；基膜层为 BOPP 镀铝基膜层，其原料按重量份包括：乙烯-辛烯共聚物 5份，PP 原料 100 份。
S1、热封层的制备方法为将热封材料加入到去离子水溶液中，升高温度到 100℃，待热封材料融化之后，将马来酸酐接枝改性物和有机抗粘合剂添加，升高温度至 280℃，待去离子水溶液蒸发之后，即得到三种材质的混合溶液，将混合溶液在 30℃的环境温度下冷却为固态即可得到热封层；
S2、芯层的制备方法为将阻抗静电材料和均聚丙烯材料一同投入到挤出机内部，将温度提高到 255℃，直到材料融化混合在一起，控制温度不变化，保证材料处于熔融状态；
S3、基膜层的制备方法为将乙烯-辛烯共聚物与 PP 原料按照 5:100 的分量比混合，控制温度在 88℃，保持环境为真空状态，可以得到改性处理后的 PP原料，随后控制温度在 192℃将 PP 原料熔融塑形，将 PP 原料熔融物投入到挤压成型机内部，挤压成三层BOPP 基材片，控制温度在 25℃，使 BOPP 基材片表面冷却，提高环境温度到 125℃，对BOPP 基材片进行横向拉伸，随后进行热处理和冷却处理，随后再一起提升温度到 125℃，对 BOPP 基材片进行纵向拉伸，再一次进行热处理和冷却，得到 BOPP 基材薄片，随后对BOPP 基材薄片进行表面电晕处理，对电晕处理后的 BOPP 基材薄片进行牵引收卷，随后对牵引后的 BOPP 基材薄片进行时效处理，对时效处理后的 BOPP 基材薄片进行分切，将分切后的 BOPP 基材薄片投入到真空镀铝设备的蒸发舟预热，控制铝丝传送速度为 1250mm/min，真空镀铝设备绕卷速度为 7.4m/s 后，对 BOPP 基膜进行镀铝处理，即可得到 BOPP镀铝基膜层；
S4、将 S1 和 S3 中制备的热封层和基膜层分别加入到两台辅助挤出机器内部，控制温度在 330℃，将其加热为熔融状态，将 S2 中获得的熔融物和上述的熔融物过滤出来后，经过连接杆将三者一同传输到 T 型模头处汇合挤出，对挤出的混合基膜进行水浴冷却处理，控制水浴温度为 32℃，从而可以得到BOPP 镀铝基膜。
优选的，S1 中去离子水指的是除去了呈现离子形式杂质后的纯水。
优选的，S2 在制备芯层后，需要将芯层放置在温度为 255℃的挤压成型机器内部，等待热封层和基膜层进入辅助挤压机内部，随后一同进行混合挤压。
优选的，S3 中电晕处理时，电极电压的强度为 8.6kv，电晕处理的强度为 43dym/cm，同时控制温度在 42℃，以及生产线速度为 188m/min。
优选的，S3 中的时效处理就是对基膜层进行静置冷却处理，控制时效处理的温度在 36℃，控制时间为 3 天。
优选的，S4 中主挤压成型机的过滤网为 400 目，辅助挤压成型机的过滤网为150 目。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (6)

1.一种包装用BOPP镀铝基膜，依次由热封层，芯层，基膜层组成，其特征在于：所述热封层的原料按重量份包括：有机抗粘合剂3-4份，马来酸酐接枝改性物3-5份，热封材料95-100份；所述芯层的原料按重量份包括：阻抗静电材料1-2份，均聚丙烯99-102份；所述基膜层为BOPP镀铝基膜层，其原料按重量份包括：乙烯-辛烯共聚物1-5份，PP原料100份。
S1、热封层的制备方法为将热封材料加入到去离子水溶液中，升高温度到95-100℃，待热封材料融化之后，将马来酸酐接枝改性物和有机抗粘合剂添加，升高温度至220-280℃，待去离子水溶液蒸发之后，即得到三种材质的混合溶液，将混合溶液在25-30℃的环境温度下冷却为固态即可得到热封层；
S2、芯层的制备方法为将阻抗静电材料和均聚丙烯材料一同投入到挤出机内部，将温度提高到240-255℃，直到材料融化混合在一起，控制温度不变化，保证材料处于熔融状态；
S3、基膜层的制备方法为将乙烯-辛烯共聚物与PP原料按照1:100-5:100的分量比混合，控制温度在62-88℃，保持环境为真空状态，可以得到改性处理后的PP原料，随后控制温度在175-192℃将PP原料熔融塑形，将PP原料熔融物投入到挤压成型机内部，挤压成三层BOPP基材片，控制温度在20-25℃，使BOPP基材片表面冷却，提高环境温度到110-125℃，对BOPP基材片进行横向拉伸，随后进行热处理和冷却处理，随后再一起提升温度到110-125℃，对BOPP基材片进行纵向拉伸，再一次进行热处理和冷却，得到BOPP基材薄片，随后对BOPP基材薄片进行表面电晕处理，对电晕处理后的BOPP基材薄片进行牵引收卷，随后对牵引后的BOPP基材薄片进行时效处理，对时效处理后的BOPP基材薄片进行分切，将分切后的BOPP基材薄片投入到真空镀铝设备的蒸发舟预热，控制铝丝传送速度为350-1250mm/min，真空镀铝设备绕卷速度为3.6-7.4m/s后，对BOPP基膜进行镀铝处理，即可得到BOPP镀铝基膜层；
S4、将S1和S3中制备的热封层和基膜层分别加入到两台辅助挤出机器内部，控制温度在270-330℃，将其加热为熔融状态，将S2中获得的熔融物和上述的熔融物过滤出来后，经过连接杆将三者一同传输到T型模头处汇合挤出，对挤出的混合基膜进行水浴冷却处理，控制水浴温度为22-32℃，从而可以得到BOPP镀铝基膜。
2.根据权利要求1所述的一种包装用BOPP镀铝基膜，其特征在于：所述S1中去离子水指的是除去了呈现离子形式杂质后的纯水。
3.根据权利要求1所述的一种包装用BOPP镀铝基膜，其特征在于：所述S2在制备芯层后，需要将芯层放置在温度为240-255℃的挤压成型机器内部，等待热封层和基膜层进入辅助挤压机内部，随后一同进行混合挤压。
4.根据权利要求1所述的一种包装用BOPP镀铝基膜，其特征在于：所述S3中电晕处理时，电极电压的强度为7.0-8.6kv，电晕处理的强度为40-43dym/cm，同时控制温度在25-42℃，以及生产线速度为162-188m/min。
5.根据权利要求4所述的一种包装用BOPP镀铝基膜，其特征在于：所述S3中的时效处理就是对基膜层进行静置冷却处理，控制时效处理的温度在24-36℃，控制时间为2-3天。
6.根据权利要求1所述的一种包装用BOPP镀铝基膜，其特征在于：所述S4中主挤压成型机的过滤网为400目，辅助挤压成型机的过滤网为150目。
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