CN109485968A - 一种环保型食品包装膜 - Google Patents

一种环保型食品包装膜 Download PDF

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CN109485968A
CN109485968A CN201811267870.XA CN201811267870A CN109485968A CN 109485968 A CN109485968 A CN 109485968A CN 201811267870 A CN201811267870 A CN 201811267870A CN 109485968 A CN109485968 A CN 109485968A
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姚何兵
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Anhui Jingle Plastic Industry Co Ltd
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Abstract

本发明公开了一种环保型食品包装膜,其原料按重量份包括:50‑70份低密度聚乙烯、40‑60份淀粉、30‑50份聚氯乙烯、6‑12份陶瓷粉、5‑9份碳酸钙、10‑20份改性水滑石、5‑9份二氧化钛、1‑3份氧化锌、5‑8份环氧大豆油、2‑5份甘油、2‑4份甲基纤维素、1‑3份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水。本发明的环保型食品包装膜具有良好的抗菌性能、机械性能,以保证食品的安全、延长食品的货架寿命,还具有生物降解性,减少对环境的污染。

Description

一种环保型食品包装膜
技术领域
本发明涉及包装膜技术领域,具体涉及一种环保型食品包装膜。
背景技术
自然界中的有害微生物一直严重威胁着人类的健康水平,全世界每年都有数百万人死于细菌感染。因此,世界各国对抗菌剂及抗菌制品的研究越来越重视。熟话说“病从口入”,食品是各类微生物繁殖的最佳场所,一旦包装不当,很容易滋生细菌,因此急需开发具备抗菌性能的包装膜。
发明内容
基于背景技术存在的技术问题,本发明提出了一种环保型食品包装膜,具有良好的抗菌性能、机械性能,还具有生物降解性,减少对环境的污染。
本发明提出了一种环保型食品包装膜,其原料按重量份包括:50-70份低密度聚乙烯、40-60份淀粉、30-50份聚氯乙烯、6-12份陶瓷粉、5-9份碳酸钙、10-20份改性水滑石、5-9份二氧化钛、1-3份氧化锌、5-8份环氧大豆油、2-5份甘油、2-4份甲基纤维素、1-3份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水。
优选地,所述低密度聚乙烯、淀粉、聚氯乙烯、改性水滑石的重量比为55-66:42-57:35-46:13-19。
优选地,所述陶瓷粉、碳酸钙、改性水滑石、二氧化钛、氧化锌、环氧大豆油的重量比为7-11:6-8:13-19:6-8:1.5-2.5:6-7。
优选地,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值,搅拌反应,静置,过滤,洗涤,干燥,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,振荡,离心,干燥,即可得到改性水滑石。
优选地,所述山梨酸钙、盐酸小檗碱的重量比为7-10:1-2。
优选地,所述水滑石、山梨酸钙的重量比为30-40:0.1-0.2。
优选地,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为2-3,在55-70℃下搅拌反应3-5h,静置1-2h,过滤,用蒸馏水对沉淀物洗涤3-4次,置于60-65℃下干燥5-10h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在60-65℃的温度下振荡2-4h,离心,在75-80℃下干燥5-8h,即可得到改性水滑石。
本发明环保型食品包装膜可以采用本领域常规的制备方法。
本发明环保型食品包装膜,低密度聚乙烯、淀粉、聚氯乙烯等成分作为基料,由于淀粉的添加使得包装薄膜具有生物降解性,减少对环境的污染,还添加陶瓷粉、碳酸钙、改性水滑石、二氧化钛、氧化锌、环氧大豆油、甘油、甲基纤维素、硬脂酸镁等原料,不仅可以促进各原料在基料中的分散性,还使得环保型食品包装膜具有良好的抗菌性能、机械性能,以保证食品的安全、延长食品的货架寿命。本发明添加的改性水滑石,先采用十二烷基磺酸钠对其表面进行改性处理,促进后面的对山梨酸钙、盐酸小檗碱吸附作用,得到的改性水滑石不仅在体系中可促进与其他原料之间的相容性,增强本发明包装薄膜的抗菌性、拉伸强度,还能够不断释放山梨酸钙、盐酸小檗碱,抑制微生物的生长,具有很好的抗菌性能;本发明还添加二氧化钛和氧化锌无机抗菌剂,与改性蒙脱土配合使用,具有相互促进的作用,可以延长抗菌周期、拓宽抗菌谱,增强包装膜的抗菌效果,还因改性蒙脱土可促进二氧化钛和氧化锌在基料中的分散性,进一步增强包装薄膜的抗菌作用;添加环氧大豆油、甘油、甲基纤维素、硬脂酸镁,与改性蒙脱土共同增强原料间的相容性,进而提高环保型食品包装膜的稳定性和机械强度。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种环保型食品包装膜,其原料按重量份包括:70份低密度聚乙烯、40份淀粉、50份聚氯乙烯、6份陶瓷粉、9份碳酸钙、10份改性水滑石、9份二氧化钛、1份氧化锌、8份环氧大豆油、2份甘油、4份甲基纤维素、1份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水;
其中,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为3,在55℃下搅拌反应5h,静置1h,过滤,用蒸馏水对沉淀物洗涤4次,置于60℃下干燥10h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在60℃的温度下振荡4h,离心,在75℃下干燥8h,即可得到改性水滑石;
所述山梨酸钙、盐酸小檗碱的重量比为7:2;所述水滑石、山梨酸钙的重量比为30:0.2。
实施例2
一种环保型食品包装膜,其原料按重量份包括:50份低密度聚乙烯、60份淀粉、30份聚氯乙烯、12份陶瓷粉、5份碳酸钙、20份改性水滑石、5份二氧化钛、3份氧化锌、5份环氧大豆油、5份甘油、2份甲基纤维素、3份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水;
其中,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为2,在70℃下搅拌反应3h,静置2h,过滤,用蒸馏水对沉淀物洗涤3次,置于65℃下干燥5h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在65℃的温度下振荡2h,离心,在80℃下干燥5h,即可得到改性水滑石;
所述山梨酸钙、盐酸小檗碱的重量比为10:1;所述水滑石、山梨酸钙的重量比为40:0.1。
实施例3
一种环保型食品包装膜,其原料按重量份包括:66份低密度聚乙烯、42份淀粉、46份聚氯乙烯、7份陶瓷粉、8份碳酸钙、13份改性水滑石、8份二氧化钛、1.5份氧化锌、7份环氧大豆油、3份甘油、3.5份甲基纤维素、1.5份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水;
其中,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为3,在55℃下搅拌反应5h,静置1h,过滤,用蒸馏水对沉淀物洗涤4次,置于60℃下干燥10h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在60℃的温度下振荡4h,离心,在75℃下干燥8h,即可得到改性水滑石;
所述山梨酸钙、盐酸小檗碱的重量比为7:2;所述水滑石、山梨酸钙的重量比为30:0.2。
实施例4
一种环保型食品包装膜,其原料按重量份包括:55份低密度聚乙烯、57份淀粉、35份聚氯乙烯、11份陶瓷粉、6份碳酸钙、19份改性水滑石、6份二氧化钛、2.5份氧化锌、6份环氧大豆油、4份甘油、2.5份甲基纤维素、2.5份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水;
其中,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为2,在70℃下搅拌反应3h,静置2h,过滤,用蒸馏水对沉淀物洗涤3次,置于65℃下干燥5h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在65℃的温度下振荡2h,离心,在80℃下干燥5h,即可得到改性水滑石;
所述山梨酸钙、盐酸小檗碱的重量比为10:1;所述水滑石、山梨酸钙的重量比为40:0.1。
实施例5
一种环保型食品包装膜,其原料按重量份包括:62份低密度聚乙烯、50份淀粉、40份聚氯乙烯、9份陶瓷粉、7份碳酸钙、16份改性水滑石、7份二氧化钛、2份氧化锌、6.5份环氧大豆油、3.5份甘油、3份甲基纤维素、2份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水;
其中,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为2.5,在65℃下搅拌反应4h,静置1.5h,过滤,用蒸馏水对沉淀物洗涤3次,置于62℃下干燥8h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在64℃的温度下振荡3h,离心,在78℃下干燥6h,即可得到改性水滑石;
所述山梨酸钙、盐酸小檗碱的重量比为8:1.5;所述水滑石、山梨酸钙的重量比为36:0.15。
对比例1
与实施例5基本相同,区别仅仅在于:未采用改性水滑石,得到对比例1的包装膜。
试验例1
分别对本发明实施例1-5的环保型食品包装膜和对比例1进行机械性能和抗菌性的检测,机械性能的检测标准为GB/T 13022-1991,抗菌性能的检测标准为QB/T 2591-2003,测试结果如表1所示。
表1
由表1可以看出,本发明得到的环保型食品包装膜具有较好的机械性能和抗菌效果,可以保证食品的安全,延长食品的货架寿命。
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之内。

Claims (7)

1.一种环保型食品包装膜,其特征在于,其原料按重量份包括:50-70份低密度聚乙烯、40-60份淀粉、30-50份聚氯乙烯、6-12份陶瓷粉、5-9份碳酸钙、10-20份改性水滑石、5-9份二氧化钛、1-3份氧化锌、5-8份环氧大豆油、2-5份甘油、2-4份甲基纤维素、1-3份硬脂酸镁;其中,所述改性水滑石的原料包括水滑石、山梨酸钙、盐酸小檗碱、十二烷基磺酸钠、去离子水。
2.根据权利要求1所述环保型食品包装膜,其特征在于,所述低密度聚乙烯、淀粉、聚氯乙烯、改性水滑石的重量比为55-66:42-57:35-46:13-19。
3.根据权利要求1所述环保型食品包装膜,其特征在于,所述陶瓷粉、碳酸钙、改性水滑石、二氧化钛、氧化锌、环氧大豆油的重量比为7-11:6-8:13-19:6-8:1.5-2.5:6-7。
4.根据权利要求1所述环保型食品包装膜,其特征在于,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值,搅拌反应,静置,过滤,洗涤,干燥,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,振荡,离心,干燥,即可得到改性水滑石。
5.根据权利要求4所述环保型食品包装膜,其特征在于,所述山梨酸钙、盐酸小檗碱的重量比为7-10:1-2。
6.根据权利要求4所述环保型食品包装膜,其特征在于,所述水滑石、山梨酸钙的重量比为30-40:0.1-0.2。
7.根据权利要求4所述环保型食品包装膜,其特征在于,所述改性水滑石的制备工艺如下:
S1、将水滑石加入到蒸馏水中,再加入十二烷基磺酸钠,调节pH值为2-3,在55-70℃下搅拌反应3-5h,静置1-2h,过滤,用蒸馏水对沉淀物洗涤3-4次,置于60-65℃下干燥5-10h,得到物料A;
S2、将山梨酸钙、盐酸小檗碱、去离子水混合,搅拌均匀,加入物料A,在60-65℃的温度下振荡2-4h,离心,在75-80℃下干燥5-8h,即可得到改性水滑石。
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