CN116041837A - 一种热封性食品包装膜及其制备方法 - Google Patents
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- 235000013305 food Nutrition 0.000 title claims abstract description 48
- 239000012785 packaging film Substances 0.000 title claims abstract description 43
- 229920006280 packaging film Polymers 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title description 10
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 229920001577 copolymer Polymers 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 16
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 10
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 10
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 10
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 10
- 239000004701 medium-density polyethylene Substances 0.000 claims abstract description 10
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims abstract description 10
- 239000004209 oxidized polyethylene wax Substances 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- 239000000203 mixture Substances 0.000 claims description 24
- 235000021355 Stearic acid Nutrition 0.000 claims description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 18
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 18
- 239000008117 stearic acid Substances 0.000 claims description 18
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000000155 melt Substances 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 12
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims 3
- 238000000034 method Methods 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000005543 nano-size silicon particle Substances 0.000 description 15
- 235000012239 silicon dioxide Nutrition 0.000 description 15
- 230000006978 adaptation Effects 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
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- 230000000813 microbial effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
本发明公开了一种热封性食品包装膜,由包括以下重量份的原料制成:线性低密度聚乙烯40~48份、中密度聚乙烯22~28份、高密度聚乙烯10~15份、乙烯‑辛烯共聚物12~16份、氧化聚乙烯蜡5~7份、填料5~7份、热稳定剂3~5份、抗氧剂3~4份。本发明的热封性食品包装膜通过精选原料组成,制得的热封性食品包装膜具有热收缩率低,热封等受热情况下变形小,挺度高;此外,阻隔性能好,光泽度高,健康,对人体无害。
Description
技术领域
本发明涉及包装薄膜技术领域,具体涉及一种热封性食品包装膜及其制备方法。
背景技术
食品包装薄膜是用来包裹在食品表面,主要用以隔离分解微生物细菌和外来污染物的进入,防止及延长食品变质的高聚物材料。食品包装直接与食品接触,其材料选择是否得当,关系到食品安全和人们的身体健康。
但是,目前所使用的食品包装膜还存在以下问题:
1、热收缩率较大,挺度较低,受热容易变形;
2、阻隔性能、光泽度等性能较差;
3、添加剂的使用导致影响食品安全和人们的身体健康。
基于上述情况,本发明提出了一种热封性食品包装膜及其制备方法,可有效解决以上问题。
发明内容
本发明的目的在于提供一种热封性食品包装膜及其制备方法。本发明的热封性食品包装膜通过精选原料组成,制得的热封性食品包装膜具有热收缩率低,热封等受热情况下变形小,挺度高;此外,阻隔性能好,光泽度高,健康,对人体无害。
为解决以上技术问题,本发明提供的技术方案是:
一种热封性食品包装膜,由包括以下重量份的原料制成:
线性低密度聚乙烯40~48份、
中密度聚乙烯22~28份、
高密度聚乙烯10~15份、
乙烯-辛烯共聚物12~16份、
氧化聚乙烯蜡5~7份、
填料5~7份、
热稳定剂3~5份、
抗氧剂3~4份。
本发明的热封性食品包装膜通过精选原料组成,制得的热封性食品包装膜具有热收缩率低,热封等受热情况下变形小,挺度高;此外,阻隔性能好,光泽度高,健康,对人体无害。
优选的,所述热封性食品包装膜由包括以下重量份的原料制成:
线性低密度聚乙烯44份、
中密度聚乙烯25份、
高密度聚乙烯12.5份、
乙烯-辛烯共聚物14份、
氧化聚乙烯蜡6份、
填料6份、
热稳定剂4份、
抗氧剂3.5份。
优选的,所述乙烯-辛烯共聚物中单体单元乙烯含量为72~75wt%。
优选的,所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
优选的,所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.6~0.7。
优选的,所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
优选的,所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.3~0.4。
优选的,所述抗氧剂为抗氧剂1010。
本发明还提供一种所述的热封性食品包装膜的制备方法,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
本发明与现有技术相比,具有以下优点及有益效果:
本发明的热封性食品包装膜通过精选原料组成,制得的热封性食品包装膜具有热收缩率低,热封等受热情况下变形小,挺度高;此外,阻隔性能好,光泽度高,健康,对人体无害。
具体实施方式
为了使本领域的技术人员更好地理解本发明的技术方案,下面结合具体实施例对本发明的优选实施方案进行描述,但是不能理解为对本专利的限制。
实施例1:
一种热封性食品包装膜,由包括以下重量份的原料制成:
线性低密度聚乙烯40~48份、
中密度聚乙烯22~28份、
高密度聚乙烯10~15份、
乙烯-辛烯共聚物12~16份、
氧化聚乙烯蜡5~7份、
填料5~7份、
热稳定剂3~5份、
抗氧剂3~4份。
优选的,所述热封性食品包装膜由包括以下重量份的原料制成:
线性低密度聚乙烯44份、
中密度聚乙烯25份、
高密度聚乙烯12.5份、
乙烯-辛烯共聚物14份、
氧化聚乙烯蜡6份、
填料6份、
热稳定剂4份、
抗氧剂3.5份。
优选的,所述乙烯-辛烯共聚物中单体单元乙烯含量为72~75wt%。
优选的,所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
优选的,所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.6~0.7。
优选的,所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
优选的,所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.3~0.4。
优选的,所述抗氧剂为抗氧剂1010。
本发明还提供一种所述的热封性食品包装膜的制备方法,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
实施例2:
一种热封性食品包装膜,由包括以下重量份的原料制成:
线性低密度聚乙烯40份、
中密度聚乙烯22份、
高密度聚乙烯10份、
乙烯-辛烯共聚物12份、
氧化聚乙烯蜡5份、
填料5份、
热稳定剂3份、
抗氧剂3份。
所述乙烯-辛烯共聚物中单体单元乙烯含量为72wt%。
所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.6。
所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.3。
所述抗氧剂为抗氧剂1010。
所述的热封性食品包装膜的制备方法,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
实施例3:
一种热封性食品包装膜,由包括以下重量份的原料制成:
线性低密度聚乙烯48份、
中密度聚乙烯28份、
高密度聚乙烯15份、
乙烯-辛烯共聚物16份、
氧化聚乙烯蜡7份、
填料7份、
热稳定剂5份、
抗氧剂4份。
所述乙烯-辛烯共聚物中单体单元乙烯含量为5wt%。
所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.7。
所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.4。
所述抗氧剂为抗氧剂1010。
所述的热封性食品包装膜的制备方法,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
实施例4:
一种热封性食品包装膜,由包括以下重量份的原料制成:
线性低密度聚乙烯44份、
中密度聚乙烯25份、
高密度聚乙烯12.5份、
乙烯-辛烯共聚物14份、
氧化聚乙烯蜡6份、
填料6份、
热稳定剂4份、
抗氧剂3.5份。
所述乙烯-辛烯共聚物中单体单元乙烯含量为73.5wt%。
所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.65。
所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.35。
所述抗氧剂为抗氧剂1010。
所述的热封性食品包装膜的制备方法,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
下面对本发明实施例2至实施例4得到的热封性食品包装膜进行性能测试,测试结果如表1所示:
表1
从上表可以看出,本发明的热封性食品包装膜具有以下优点:热收缩率低,热封等受热情况下变形小,挺度高。
以上仅是本发明的优选实施方式,应当指出的是,上述优选实施方式不应视为对本发明的限制,本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说,在不脱离本发明的精神和范围内,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (9)
1.一种热封性食品包装膜,其特征在于,由包括以下重量份的原料制成:
线性低密度聚乙烯40~48份、
中密度聚乙烯22~28份、
高密度聚乙烯10~15份、
乙烯-辛烯共聚物12~16份、
氧化聚乙烯蜡5~7份、
填料5~7份、
热稳定剂3~5份、
抗氧剂3~4份。
2.根据权利要求1所述的热封性食品包装膜,其特征在于,所述热封性食品包装膜由包括以下重量份的原料制成:
线性低密度聚乙烯44份、
中密度聚乙烯25份、
高密度聚乙烯12.5份、
乙烯-辛烯共聚物14份、
氧化聚乙烯蜡6份、
填料6份、
热稳定剂4份、
抗氧剂3.5份。
3.根据权利要求1所述的热封性食品包装膜,其特征在于,所述乙烯-辛烯共聚物中单体单元乙烯含量为72~75wt%。
4.根据权利要求1所述的热封性食品包装膜,其特征在于,所述填料为纳米碳酸钙和纳米二氧化硅的混合物。
5.根据权利要求4所述的热封性食品包装膜,其特征在于,所述纳米碳酸钙和纳米二氧化硅的混合物中纳米碳酸钙和纳米二氧化硅的质量之比为1:0.6~0.7。
6.根据权利要求1所述的热封性食品包装膜,其特征在于,所述热稳定剂为硬脂酸锌和硬脂酸的混合物。
7.根据权利要求6所述的热封性食品包装膜,其特征在于,所述硬脂酸锌和硬脂酸的混合物中硬脂酸锌和硬脂酸的质量之比为1:0.3~0.4。
8.根据权利要求1所述的热封性食品包装膜,其特征在于,所述抗氧剂为抗氧剂1010。
9.一种如权利要求1至8任一项所述的热封性食品包装膜的制备方法,其特征在于,包括下列步骤:
A、按重量份分别称取各原料;
B、将称取各原料混合均匀,送入双螺杆挤出机中熔融塑化,形成熔体;
C、所述熔体经模头挤出,经急冷辊和水槽快速冷却,形成固体铸片;
D、然后依次进行纵向拉伸、横向拉伸、在线测厚、边料切割、自动收卷,最后分切制得成品所述热封性食品包装膜。
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