CN107163510A - 抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法 - Google Patents

抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法 Download PDF

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CN107163510A
CN107163510A CN201710577152.1A CN201710577152A CN107163510A CN 107163510 A CN107163510 A CN 107163510A CN 201710577152 A CN201710577152 A CN 201710577152A CN 107163510 A CN107163510 A CN 107163510A
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彭姝文
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Wuhu City Sanshan District Green Food Industry Association
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Abstract

本发明公开了一种抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法,该制备方法包括:1)将高岭土、硅酸、季铵盐和环糊精进行球磨以制得改性高岭土;2)将聚酯、乙烯‑甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土进行混炼以制得混炼物;3)将粘结剂涂覆于铝箔的两侧,接着干燥以形成粘结层,然后将混炼物热压于粘结层的上方形成聚酯层以制得抗老化聚酯/铝箔/聚酯复合食品包装膜。该聚酯/铝箔/聚酯复合食品包装膜具有优异的抗老化性能,同时该制备方法具有工序简单和原料易得的优点。

Description

抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法
技术领域
本发明涉及食品包装膜,具体地,涉及一种抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法。
背景技术
复合包装膜是一种十分常见的包装材料,主要包括高分子之间的复合包装膜、纸/铝箔与高分子之间的复合薄膜。现有的复合包装膜主要满足以下性能要求:性质稳定、强度高和耐腐蚀。但是,在高温的环境中,复合包装膜的极易老化甚至是出现破损,进而使得食物难以得到有效地保存。
发明内容
本发明的目的是提供一种抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法,该聚酯/铝箔/聚酯复合食品包装膜具有优异的抗老化性能,同时该制备方法具有工序简单和原料易得的优点。
为了实现上述目的,本发明提供了一种抗老化聚酯/铝箔/聚酯复合食品包装膜的制备方法,包括:
1)将高岭土、硅酸、季铵盐和环糊精进行球磨以制得改性高岭土;
2)将聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土进行混炼以制得混炼物;
3)将粘结剂涂覆于铝箔的两侧,接着干燥以形成粘结层,然后将混炼物热压于粘结层的上方形成聚酯层以制得抗老化聚酯/铝箔/聚酯复合食品包装膜。
本发明还提供了一种抗老化聚酯/铝箔/聚酯复合食品包装膜,该抗老化聚酯/铝箔/聚酯复合食品包装膜通过上述的制备方法制备而得。
在上述技术方案中,本发明首先通过硅酸、季铵盐和环糊精以及球磨的方式对高岭土进行改性进而得到改性高岭土,接着将聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土进行混炼得到混炼物,其中改性高岭土能够使得混炼物具有优异的抗老化性能,最后将混炼物与铝箔进行复合制得具有抗老化性能的聚酯/铝箔/聚酯复合食品包装膜。此外,该制备方法具有工序简单和原料易得的优点。
本发明的其他特征和优点将在随后的具体实施方式部分予以详细说明。
具体实施方式
以下对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。
本发明提供了一种抗老化聚酯/铝箔/聚酯复合食品包装膜的制备方法,包括:
1)将高岭土、硅酸、季铵盐和环糊精进行球磨以制得改性高岭土;
2)将聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土进行混炼以制得混炼物;
3)将粘结剂涂覆于铝箔的两侧,接着干燥以形成粘结层,然后将混炼物热压于粘结层的上方形成聚酯层以制得抗老化聚酯/铝箔/聚酯复合食品包装膜。
在上述制备方法的步骤1)中,各物料的用量可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤1)中,高岭土、硅酸、季铵盐和环糊精的重量比为100:20-26:1-5:0.8-2。
在上述制备方法的步骤1)中,球磨的条件可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤1)中,球磨至少满足以下条件:在步骤1)中,大球与小球的质量比为2:1.3-1.6,磨球与物料的质量比为10:2-2.6,转速为1200-1500rpm,球磨时间为25-35min。
在上述制备方法的步骤2)中,各物料的用量可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤2)中,聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土的重量比为100:33-40:20-26:15-19:5-9:1-3:5-10:11-16:35-45:17-25。
在上述制备方法的步骤2)中,混炼的具体条件可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤2)中,混炼至少满足以下条件:混炼温度为210-220℃,混炼时间为90-120min。
在上述制备方法的步骤2)中,聚酯、乙烯-甲基丙烯酸共聚物的重均分子量可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤2)中,聚酯的重均分子量为3000-5000,乙烯-甲基丙烯酸共聚物的重均分子量为2000-4000。
在上述制备方法的步骤3)中,各层的厚度可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,在步骤3)中,粘结层的厚度为0.01-0.03mm,聚酯层的厚度为0.04-0.06mm,铝箔的厚度为0.05-0.10mm。
在上述制备方法的步骤3)中,热压的具体条件可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,热压至少满足以下条件:热压温度为200-205℃,热压压力为2-5MPa。
在上述制备方法的步骤3)中,粘结剂的具体种类可以在宽的范围内选择,但是为了使制得的聚酯/铝箔/聚酯复合食品包装膜具有更优异的抗老化性能,优选地,粘结剂为聚氨酯粘结剂。
本发明还提供了一种抗老化聚酯/铝箔/聚酯复合食品包装膜,该抗老化聚酯/铝箔/聚酯复合食品包装膜通过上述的制备方法制备而得。
以下将通过实施例对本发明进行详细描述。
实施例1
1)将高岭土、硅酸、季铵盐和环糊精按照100:24:3:1.5的重量比进行球磨(大球与小球的质量比为2:1.4,磨球与物料的质量比为10:2.4,转速为1300rpm,球磨时间为30min)以制得改性高岭土;
2)将聚酯(重均分子量为4000)、乙烯-甲基丙烯酸共聚物(重均分子量为3000)、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土按照100:38:23:17:7:2:8:13:40:20的重量比于215下混炼100min以制得混炼物;
3)将粘结剂涂覆于铝箔(厚度为0.08mm)的两侧,接着干燥以形成粘结层(厚度为0.02mm),然后将混炼物热压于粘结层的上方形成聚酯层(厚度为0.05mm)以制得抗老化聚酯/铝箔/聚酯复合食品包装膜A1。
实施例2
1)将高岭土、硅酸、季铵盐和环糊精按照100:20:1:0.8的重量比进行球磨(大球与小球的质量比为2:1.3,磨球与物料的质量比为10:2,转速为1200rpm,球磨时间为25min)以制得改性高岭土;
2)将聚酯(重均分子量为3000)、乙烯-甲基丙烯酸共聚物(重均分子量为2000)、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土按照100:33:20:15:5:1:5:11:35:17的重量比于210下混炼90min以制得混炼物;
3)将粘结剂涂覆于铝箔(厚度为0.05mm)的两侧,接着干燥以形成粘结层(厚度为0.01mm),然后将混炼物热压于粘结层的上方形成聚酯层(厚度为0.04mm)以制得抗老化聚酯/铝箔/聚酯复合食品包装膜A2。
实施例3
1)将高岭土、硅酸、季铵盐和环糊精按照100:26:5:2的重量比进行球磨(大球与小球的质量比为2:1.6,磨球与物料的质量比为10:2.6,转速为1500rpm,球磨时间为35min)以制得改性高岭土;
2)将聚酯(重均分子量为5000)、乙烯-甲基丙烯酸共聚物(重均分子量为4000)、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土按照100:40:26:19:9:3:10:16:45:25的重量比于220下混炼120min以制得混炼物;
3)将粘结剂涂覆于铝箔(厚度为0.10mm)的两侧,接着干燥以形成粘结层(厚度为0.03mm),然后将混炼物热压于粘结层的上方形成聚酯层(厚度为0.06mm)以制得抗老化聚酯/铝箔/聚酯复合食品包装膜A3。
对比例1
按照实施例1的方法制得聚酯/铝箔/聚酯复合食品包装膜B1,不同的是,步骤1)中未使用硅酸。
对比例2
按照实施例1的方法制得聚酯/铝箔/聚酯复合食品包装膜B2,不同的是,步骤1)中未使用季铵盐。
对比例3
按照实施例1的方法制得聚酯/铝箔/聚酯复合食品包装膜B3,不同的是,步骤1)中未使用环糊精。
检测例1
检测上述聚酯/铝箔/聚酯复合食品包装膜的拉伸强度1,接着将其置于150℃下放置7天,然后检测其拉伸强度2,接着计算拉伸强度损失系数(%),拉伸强度损失系数(%)=(拉伸强度1-拉伸强度2)/拉伸强度1×100%,具体结果见表1。
通过上述实施例、对比例和检测例可知,本发明提供的聚酯/铝箔/聚酯复合食品包装膜具有优异的抗老化性能。
以上详细描述了本发明的优选实施方式,但是,本发明并不限于上述实施方式中的具体细节,在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范围。
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。
此外,本发明的各种不同的实施方式之间也可以进行任意组合,只要其不违背本发明的思想,其同样应当视为本发明所公开的内容。

Claims (10)

1.一种抗老化聚酯/铝箔/聚酯复合食品包装膜的制备方法,其特征在于,包括:
1)将高岭土、硅酸、季铵盐和环糊精进行球磨以制得改性高岭土;
2)将聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土进行混炼以制得混炼物;
3)将粘结剂涂覆于铝箔的两侧,接着干燥以形成粘结层,然后将所述混炼物热压于所述粘结层的上方形成聚酯层以制得所述抗老化聚酯/铝箔/聚酯复合食品包装膜。
2.根据权利要求1所述的制备方法,其中,在步骤1)中,所述高岭土、硅酸、季铵盐和环糊精的重量比为100:20-26:1-5:0.8-2。
3.根据权利要求1所述的制备方法,其中,在步骤1)中,所述球磨至少满足以下条件:在步骤1)中,大球与小球的质量比为2:1.3-1.6,磨球与物料的质量比为10:2-2.6,转速为1200-1500rpm,球磨时间为25-35min。
4.根据权利要求1所述的制备方法,其中,在步骤2)中,所述聚酯、乙烯-甲基丙烯酸共聚物、顺丁橡胶、三乙醇胺、滑石粉、白炭黑、硅酸铝纤维、甲壳素、甲基丙烯酸甲酯和改性高岭土的重量比为100:33-40:20-26:15-19:5-9:1-3:5-10:11-16:35-45:17-25。
5.根据权利要求1-4中任意一项所述的制备方法,其中,在步骤2)中,所述混炼至少满足以下条件:混炼温度为210-220℃,混炼时间为90-120min。
6.根据权利要求5中任意一项所述的制备方法,其中,在步骤2)中,所述聚酯的重均分子量为3000-5000,所述乙烯-甲基丙烯酸共聚物的重均分子量为2000-4000。
7.根据权利要求5任意一项所述的制备方法,其中,在步骤3)中,所述粘结层的厚度为0.01-0.03mm,所述聚酯层的厚度为0.04-0.06mm,所述铝箔的厚度为0.05-0.10mm。
8.根据权利要求6或7任意一项所述的制备方法,其中,所述热压至少满足以下条件:热压温度为200-205℃,热压压力为2-5MPa。
9.根据权利要求8任意一项所述的制备方法,其中,所述粘结剂为聚氨酯粘结剂。
10.一种抗老化聚酯/铝箔/聚酯复合食品包装膜,其特征在于,所述抗老化聚酯/铝箔/聚酯复合食品包装膜通过权利要求1-9中任意一项所述的制备方法制备而得。
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