CN114716753A - 一种塑钢包装膜及其制备方法 - Google Patents
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- 239000012785 packaging film Substances 0.000 title claims abstract description 24
- 229920006280 packaging film Polymers 0.000 title claims abstract description 24
- 229920003023 plastic Polymers 0.000 title claims abstract description 18
- 239000004033 plastic Substances 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 239000000155 melt Substances 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 7
- -1 polyethylene Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229920000092 linear low density polyethylene Polymers 0.000 description 4
- 239000004707 linear low-density polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
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- Manufacturing & Machinery (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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Abstract
本发明涉及到一种塑钢包装膜及其制备方法,包括MLDPE主材料、PIB助剂和弹性助剂;MLDPE主材料包括6CMLDPE和8CMLDPE,6CMLDPE和8CMLDPE的比例为1:0.8‑1.2;弹性助剂为6202型MLDPE(MLDPE6202);MLDPE主材料、PIB助剂和MLDPE助剂的物质比例为85‑90:2‑4:8‑12。通过配方调整降低熔指指数,从根源上降低拉伸率;其次通过成型定型工艺控制拉伸效果,在流延时熔体经过一个由热到冷的过程,现在就是最大程度上缩短这个过程,从一个热快速转冷,极速定型,提升塑料的挺度、硬度,降低拉伸率。
Description
技术领域
本发明涉及一种包装膜制备工艺,特别涉及一种塑钢包装膜及其制备方法。
背景技术
包装薄膜,是一种用聚氯乙烯、聚乙烯、聚丙烯、聚苯乙烯以及其他树脂制成的薄膜,用于包装,以及用作覆膜层。
目前市面上常见的包装薄膜,因其结构强度较差而不适用于重型包装;对于重型包装而言,要求包装薄膜具有低拉伸率、高拉伸力、高耐穿刺的性能。
其中,拉伸性能决定束紧度,长时间、长距离运输之后,因为薄膜本身张力的释放和晃动造成束紧度会降低,对于重型运输是存在巨大风险;耐刺穿性是指抵抗被穿刺针穿刺的能力。
而现有技术中的包装薄膜往往拉伸性和耐穿刺性能不能兼顾,在降低拉伸性能时,穿刺性能也会极具下降,造成打包容易断裂,或者不断裂但不能使用大张力进行打包,这也导致了现有重型运输中往往仅需要缠绕三层薄膜的,却不得不缠绕数十层甚至二十层来加固,造成了极大的浪费。
发明内容
本发明的目的是提供一种塑钢包装膜。
本发明的上述技术目的是通过以下技术方案得以实现的:一种塑钢包装膜,包括MLDPE主材料、PIB助剂和MLDPE助剂。
作为优选,所述MLDPE主材料包括6CMLDPE和8CMLDPE。
作为优选,所述6CMLDPE和8CMLDPE的比例为1:0.8-1.2。
作为优选,所述弹性助剂为MLDPE6202。
作为优选,所述MLDPE主材料、PIB助剂和MLDPE助剂的物质比例为85-90:2-4:8-12。
本发明的目的是提供一种塑钢包装膜的制备方法。
本发明的上述技术目的是通过以下技术方案得以实现的:一种用于制备权利要求1-8中任意所述塑钢包装膜的制备方法,包括以下制备步骤:
步骤1:按重量称取MLDPE主材料、PIB助剂和MLDPE助剂;
步骤2:将步骤1中加热混合至均匀;
步骤3:将步骤2中的共混物流延成膜。
综上所述,本发明具有以下有益效果:
1、对于重型包装,保持超高的抗拉能力,拉断力提升100%以上,可以实现较高束紧能力;
2、保留较好的抗穿刺能力,使得使用时可以使用较大的张力进行打包并且不会断裂;
3、减少包装材料使用量,降低使用成本
具体实施方式
本具体实施例仅仅是对本发明的解释,其并不是对本发明的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本发明的权利要求范围内都受到专利法的保护。
实施例:
一种塑钢包装膜及其制备方法,包括MLDPE主材料、PIB助剂和弹性助剂;MLDPE主材料包括6CMLDPE和8CMLDPE,6CMLDPE和8CMLDPE的比例为1:0.8-1.2;弹性助剂为6202型MLDPE(MLDPE6202);MLDPE主材料、PIB助剂和MLDPE助剂的物质比例为85-90:2-4:8-12。
6CMLDPE(6C-metallocene-catalyzed low density polyethylene)是六碳聚乙烯。
8CMLDPE是八碳聚乙烯;PIB助剂和6202mLDPE都是现有技术材料,可以在供应商处进行购买。
再通过以下步骤制备成膜:
步骤1:按重量称取MLDPE主材料、PIB助剂和MLDPE助剂;
步骤2:将步骤1中加热混合至均匀;
步骤3:将步骤2中的共混物流延成膜。
工作原理:
通过控制原料配方调整,降低整体熔指指数,分子链更大,分子纠缠作用力增大;同时产品结晶由竖列结晶转变为交错无序排布结晶,打乱排列之后,包装膜在纵向上伸长率会大幅度降低,同时横向伸长率会上升,横向为非作用力方向,这样在同样的伸长率的情况下,拉伸力急剧上升,从而获得极大的束紧能力,即提升拉伸力;现有技术使用LLDPE低密度线性聚乙烯分子链为4C结构的材料,分子链结构结构简单,4C分子链质量轻引力小,如:7042、218、201、1002等等,换用6C或8C的MLDPE高密度线性聚乙烯材料,分子支链加长,6C、8C分子链质量重引力大,结构更加紧密,如:2607、2047、3518等等。
横向的伸长率提升代表穿刺力提升;穿刺时,受力点一周三百六十度在伸长率性能都有提升,配合结晶方式使得薄膜可以承载更大的作用力,整体就是提升穿刺力;设备温度设置由170℃、190℃、210℃、230℃、250℃在现有温度的基础上整体下降10-15℃,提升冷凝时结晶度。
降低拉伸率;第一通过配方调整降低熔指指数,从根源上降低拉伸率;其次通过成型定型工艺控制拉伸效果,在流延时熔体经过一个由热到冷的过程,现在就是最大程度上缩短这个过程,从一个热快速转冷,极速定型,提升塑料的挺度、硬度,降低拉伸率。降低使用原料的熔指从4.0左右降到2.0左右,使用LLDPE结合HDPE的方式降低熔指。水温控制使用恒压水路,是滚筒内部始终保持在0.45MPA的水压,减少辊面温差,控制在±1℃左右,此工艺保证产品的均匀性。拉伸倍率从原来的300%降低到200%以下。
生产设备采用多层共同挤出,让不同的原材料,特别是加工助剂单独加热挤出,这样可以保证原材料在加工后的分布均匀并最大保留原有材料的属性。
实施例1:
实施例1为最佳实施例,本实施例中,6CMLDPE和8CMLDPE的比例为1:1。
MLDPE与PIB助剂、弹性助剂的重量比分别为87%:3%:10%。
将物质组分按照上述制备步骤制备结束后根据国际标准进行性能测试,对照例是指由4C LLDPE通过普通的成膜技术制备得到的包装薄膜,对照例和实施例1中的薄膜厚度相同,性能测试中的各项数据如下所示:
对照例 | 实施例1 | 单位 | |
纵向拉断力 | 9 | 18 | N |
横向拉断力 | 5 | 10 | N |
纵向伸长率 | 350 | 200 | % |
横向伸长率 | 500 | 500 | % |
穿刺 | 12 | 25 | N |
延伸量 | 30 | 100 | mm |
实施例2-实施例6:
实施例2-实施例6中各物质含量如下表所示:
6CMLDPE | 8CMLDPE | PIB助剂 | 弹性助剂 | |
实施例2 | 48 | 39 | 3 | 10 |
实施例3 | 40 | 47 | 3 | 10 |
实施例4 | 45 | 45 | 2 | 8 |
实施例5 | 42 | 42 | 4 | 12 |
实施例6 | 44 | 44 | 3 | 9 |
实施例2至实施例6中的性能测试中的各项数据如下所示:
Claims (6)
1.一种塑钢包装膜,其特征在于:包括MLDPE主材料、PIB助剂和弹性助剂。
2.根据权利要求1所述一种塑钢包装膜,其特征在于:所述MLDPE主材料包括6CMLDPE和8CMLDPE。
3.根据权利要求2所述一种塑钢包装膜,其特征在于:所述6CMLDPE和8CMLDPE的比例为1:0.8-1.2。
4.根据权利要求1所述一种塑钢包装膜,其特征在于:所述弹性助剂采用MLDPE6202。
5.根据权利要求1所述一种塑钢包装膜,其特征在于:所述MLDPE主材料、PIB助剂和MLDPE助剂的物质比例为85-90:2-4:8-12。
6.一种用于制备权利要求1-8中任意所述塑钢包装膜的制备方法,其特征在于,包括以下制备步骤:
步骤1:按重量称取MLDPE主材料、PIB助剂和MLDPE助剂;
步骤2:将步骤1中加热混合至均匀;
步骤3:将步骤2中的共混物流延成膜。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102501513A (zh) * | 2011-11-24 | 2012-06-20 | 佛山新长盛塑料薄膜有限公司 | 一种耐穿刺重包装复合薄膜及其制备 |
WO2014102080A1 (de) * | 2012-12-27 | 2014-07-03 | Coveris Flexibles Austria Gmbh | Kunststofffolie |
CN105774166A (zh) * | 2016-03-07 | 2016-07-20 | 马鞍山市思迪包装材料科技有限公司 | 一种用于钢卷自动缠绕包装用的拉伸缠绕膜及其制造方法 |
CN106273949A (zh) * | 2016-08-17 | 2017-01-04 | 东莞市亚兰包装材料制品有限公司 | 一种超薄预拉伸pe缠绕膜 |
CN110641116A (zh) * | 2019-11-02 | 2020-01-03 | 宁波鸿雁包装材料有限公司 | 一种高拉伸性能的薄包装膜及其制备方法 |
CN111016370A (zh) * | 2019-12-24 | 2020-04-17 | 厦门聚富塑胶制品有限公司 | 一种青贮饲料的包装膜及其制备方法 |
CN111300934A (zh) * | 2020-02-28 | 2020-06-19 | 山东新天鹤塑胶有限公司 | 聚烯烃自粘重包装膜及其制备方法 |
-
2022
- 2022-05-12 CN CN202210516384.7A patent/CN114716753A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102501513A (zh) * | 2011-11-24 | 2012-06-20 | 佛山新长盛塑料薄膜有限公司 | 一种耐穿刺重包装复合薄膜及其制备 |
WO2014102080A1 (de) * | 2012-12-27 | 2014-07-03 | Coveris Flexibles Austria Gmbh | Kunststofffolie |
CN105774166A (zh) * | 2016-03-07 | 2016-07-20 | 马鞍山市思迪包装材料科技有限公司 | 一种用于钢卷自动缠绕包装用的拉伸缠绕膜及其制造方法 |
CN106273949A (zh) * | 2016-08-17 | 2017-01-04 | 东莞市亚兰包装材料制品有限公司 | 一种超薄预拉伸pe缠绕膜 |
CN110641116A (zh) * | 2019-11-02 | 2020-01-03 | 宁波鸿雁包装材料有限公司 | 一种高拉伸性能的薄包装膜及其制备方法 |
CN111016370A (zh) * | 2019-12-24 | 2020-04-17 | 厦门聚富塑胶制品有限公司 | 一种青贮饲料的包装膜及其制备方法 |
CN111300934A (zh) * | 2020-02-28 | 2020-06-19 | 山东新天鹤塑胶有限公司 | 聚烯烃自粘重包装膜及其制备方法 |
Non-Patent Citations (1)
Title |
---|
吴天祥 等: "《农用多功能膜与长效肥使用技术问答》", vol. 1, 中国农业出版社, pages: 53 * |
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