CN105269910A - 一种保鲜隔热的食品包装或盛具材料及其制备方法 - Google Patents

一种保鲜隔热的食品包装或盛具材料及其制备方法 Download PDF

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CN105269910A
CN105269910A CN201510844217.5A CN201510844217A CN105269910A CN 105269910 A CN105269910 A CN 105269910A CN 201510844217 A CN201510844217 A CN 201510844217A CN 105269910 A CN105269910 A CN 105269910A
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Abstract

本发明提供了一种适用于食品的包装和盛放的材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯（HMSPP）发泡物，所述C为均聚聚丙烯或碳酸钙。该材料具有可回收、可分解、保温、隔热、无毒、可微波、可烘烤等特性，真正实现了绿色、环保多用途特性。

Description

一种保鲜隔热的食品包装或盛具材料及其制备方法
技术领域
本发明涉及一种PP材料，尤其涉及食品的包装和盛放。
背景技术
包装材料和盛具材料是指用于包裹或盛放用品的材料或器具，广泛用于日常生活和工业生产中。随着人们生活水平的提高，购买力大幅提升，对于包装材料的需求也越来越旺盛，如果处理不当会为环境带来极大负担。
对于人类生活中不可或缺的食品，食品的包装和盛放，材料与食品直接或非直接接触，其直接关系到人们的身体健康，安全性尤为重要。对于不同食品的包装和盛放，对耐高低温、隔热、保鲜等性能有着不同的需求。目前，普遍使用的食品包装和盛具无法同时满足抗高、低温、保温、保鲜、环保等多重需求。
发明内容
本发明提供的材料具有可回收、可分解、保温、隔热、无毒、可微波、可烘烤等特性，真正实现了绿色、环保多用途特性，尤其适用于食品的包装和盛放。
本发明的目的是通过以下措施实现的：
一种材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯(HMSPP)发泡物，所述C为均聚聚丙烯或碳酸钙聚丙烯。本发明所述的叠加是B料和C料的物理成层粘合，不发生化学反应和物料的无序混合。本发明大大提高了材料的应用性能，如力学强度、阻隔性等等。优选地，上述高融体强度聚丙烯与C的重量比为(80～90)∶(5～10)。
上述高融体强度聚丙烯发泡物的发泡剂E为碳酸氢钠。其优选用量为高融体强度聚丙烯∶E-碳酸氢钠＝(80～90)∶(2～5)，重量比计。
为了覆盖、着色等，上述材料可以包括均聚聚丙烯。均聚聚丙烯中可以添加F-色母料，用量为总量的5wt‰-5wt％。进一步地，所述均聚聚丙烯分别作为A料、D料，各组分的配比优选为：A-均聚聚丙烯5-10份、高融体聚丙烯80-90份、C-均聚PP或碳酸钙聚丙烯5-10份、D-均聚聚丙烯5-10份、E-碳酸氢钠2-5份，以重量比计。碳酸钙聚丙烯中碳酸钙含量为10-30wt％。
具体地，上述材料按照A-(BC)n-D的排列方式复合。其中n为BC层状结构的层数；n＝16～3000。
上述材料尤其适用于食品包装或盛具中的应用。
本发明的另一目的在于提供上述材料的制备方法。其通过以下措施实现的：
上述材料的制备方法，将B、C分别经混炼塑化挤出，经分配成B和C的双层复体，双层复体叠加16-3000层形成叠加复合体，将其与其它混炼塑化挤出物经分配挤出复合材料；所述挤出温度控制在160-280℃。
上述材料的制备方法，包括以下步骤：
(1)根据不同要求在A和D分别加入色母料，拌匀，分别投入A挤出机和D挤出机料斗内，高融体强度聚丙烯加入E-碳酸氢钠混匀后加入B挤出机料斗内，C加入C挤出机料斗内，挤出加工温度控制在160-280℃；
(2)高融体强度聚丙烯与E-碳酸氢钠的混合料经B挤出机混炼塑化挤出，C料经C挤出机混炼塑化挤出；经过分配器分成B和C的双层复体，然后叠加挤出16-3000层的叠加复合体；A的混合料经A挤出机混炼塑化挤出，D的混合料经D挤出机混炼塑化挤出，通过分配机将A挤出产物、叠加复合体以及D挤出产物再次经分配挤出，经过T型头模具形成A-(BC)n-D表面不同或相同颜色及性能的中间为BC层状结构的发泡复合材料，经压制、牵引、切片加工成不同宽度和厚度的片材，转至下层工序；
(3)将制作出来不同规格、发泡倍率和颜色的片材，送至热成型机，根据不同需求，将片材送入烘箱烘软，温度控制在180-350℃，烘烤时间在5-180s；通过模具、正压或负压成型，剪切装箱成产品，边角废料进行回收再利用，经消毒制得。
有益效果
1.本发明的材料具有保鲜隔热的作用，可回收、可分解、可微波、可烘烤、保温、无毒等特性，真正实现了绿色、环保的多用途特性，尤其适用于食品的包装及盛放。
2.本发明材料物理性能、耐高温性能、耐微波性能优异。
具体实施方式
下面结合具体实施例对本发明作进一步阐述，但本发明并不限于以下实施例。所述方法如无特别说明均为常规方法。所述原材料如无特别说明均能从公开商业途径而得。
实施例1
一种用于保鲜隔热的食品餐盒材料，各组分的配比如下所示：A-均聚聚丙烯(均聚PP)5-10份；高融体强度聚丙烯80-90份(中国石化燕山石化公司)、C-均聚PP或碳酸钙聚丙烯5-10份、D-均聚PP5-10份、E-碳酸氢钠2-5份；A和D中分别添加5wt‰-5wt％的F-色母料。其制备方法按以下步骤：
(1)在A和D中分别加入色母料，拌匀，分别投入A挤出机和D挤出机料斗内；高融体强度聚丙烯加入E-碳酸氢钠发泡，然后加入B挤出机料斗内；C加入C挤出机料斗内；挤出加工温度控制在160-280℃；
(2)B高融体强度聚丙烯发泡物经B挤出机混炼塑化挤出，C料经C挤出机混炼塑化挤出；经过分配器分成B和C组成的双层复体(BC层状结构)，然后进入叠加机叠加挤出16-3000层的叠加层状复合体；A的混合料经A挤出机混炼塑化挤出，D的混合料经D挤出机混炼塑化挤出，通过分配机将A挤出产物、叠加复合体以及D挤出产物再次经分配挤出A、BC、BC…D(或者描述为A-(BC)n-D)，的复合材料，经过T型头模具形成A-(BC)n-D表面不同或相同颜色及性能的中间为BC层状结构的发泡复合材料，经压制、牵引、切片加工成不同宽度和厚度的片材，转至下层工序；
(3)将制作出来不同规格、发泡倍率和颜色的片材，送至热成型机，根据不同需求，将片材送入烘箱烘软，温度控制在180-350℃，烘烤时间在5-180s；通过模具、正压或负压成型，剪切装箱成产品，边角废料进行回收再利用，经消毒制得。
1.本产品的物理性能如表1所示。
表1
透氧性测试条件：温度23℃，压力760mmHg。
2.耐高温测试：①将餐盒中装80-90％米饭、菜品，盖口用铝箔封盖，每5个一组叠放或平铺放于恒定160℃的电烤箱内，测试结果表2。
表2
②将餐盒中装80-90％米饭、菜品，盖口用铝箔封盖，每5个一组叠放或平铺放于恒定220℃的电烤箱内，测试结果表3。
表3
3.经检测，本产品符合GB14934-94和GB-9688-1988、GB18006.1-2009。
4.按照GB5009.12-2010等检测结果：蒸发残渣_水＝7.5mg/L、蒸发残渣_乙醇＝2.75mg/L、蒸发残渣_乙酸＝8.75mg/L，蒸发残渣_正己烷＝4.75mg/L。
5.本产品的检测结果如表4。
表4

Claims (10)

1.一种材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯（HMSPP）发泡物，所述C为均聚聚丙烯或碳酸钙聚丙烯。
2.如权利要求1所述的材料，所述高融体强度聚丙烯与C的重量比为（80～90）：（5～10）。
3.如权利要求1或2所述的材料，所述高融体强度聚丙烯发泡物的发泡剂为碳酸氢钠。
4.如权利要求3所述的材料，高融体强度聚丙烯：碳酸氢钠=（80～90）：（2～5），重量比计。
5.如权利要求1-4任一所述的材料，所述材料还可以包括均聚聚丙烯；所述均聚聚丙烯分别作为A料、D料，各组分的配比优选为：A-均聚聚丙烯5-10份、高融体聚丙烯80-90份、C-均聚PP或碳酸钙聚丙烯5-10份、D-均聚聚丙烯5-10份、E-碳酸氢钠2-5份，以重量比计。
6.如权利要求5所述的材料，A、D中可以添加F-色母料，用量为5wt‰-5wt%。
7.如权利要求5或6所述的材料，按照A-（BC）n-D的排列方式复合，其中n为BC层状结构的层数；n=16～3000。
8.如权利要求1-7所述的材料在食品包装或盛具中的应用。
9.如权利要求-7任一所述的材料的制备方法，将B、C分别经混炼塑化挤出，经分配成B和C的双层复体，双层复体叠加16-3000层形成叠加复合体，将其与其它混炼塑化挤出物经分配挤出复合材料；所述挤出温度控制在160-280℃。
10.如权利要求9所述的材料的制备方法，包括以下步骤：
（1）根据不同要求在A和D分别加入色母料，拌匀，分别投入A挤出机和D挤出机料斗内，高融体强度聚丙烯加入E-碳酸氢钠混匀后加入B挤出机料斗内，C加入C挤出机料斗内，挤出加工温度控制在160-280℃；
（2）高融体强度聚丙烯与E-碳酸氢钠的混合料经B挤出机混炼塑化挤出，C料经C挤出机混炼塑化挤出；经过分配器分成B和C的双层复体，然后叠加挤出16-3000层的叠加复合体；A的混合料经A挤出机混炼塑化挤出，D的混合料经D挤出机混炼塑化挤出，通过分配机将Ａ挤出产物、叠加复合体以及D挤出产物再次分配挤出，经T型头模具形成A-（BC）n-D的发泡复合材料，经压制、牵引、切片加工成不同宽度和厚度的片材；
（3）将片材送至热成型机，温度控制在180-350℃，烘烤时间在5-180s；通过模具、正压或负压成型，制得。
CN201510844217.5A 2015-11-26 2015-11-26 一种保鲜隔热的食品包装或盛具材料及其制备方法 Pending CN105269910A (zh)

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JPH0752296A (ja) * 1993-08-20 1995-02-28 Idemitsu Petrochem Co Ltd 多層シート及び該シートよりなる多層容器
CN1285272A (zh) * 1999-08-12 2001-02-28 住友化学工业株式会社 多层聚烯烃发泡片材及制备相同产品的方法和装置
US20050004244A1 (en) * 2003-06-25 2005-01-06 Sumitomo Chemical Company, Limited Propylene-based resin foamed sheet and container made from the same
US20090263645A1 (en) * 2006-07-14 2009-10-22 Dow Global Technologies Inc. Anisotropic Foam-Film Composite Structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752296A (ja) * 1993-08-20 1995-02-28 Idemitsu Petrochem Co Ltd 多層シート及び該シートよりなる多層容器
CN1285272A (zh) * 1999-08-12 2001-02-28 住友化学工业株式会社 多层聚烯烃发泡片材及制备相同产品的方法和装置
US20050004244A1 (en) * 2003-06-25 2005-01-06 Sumitomo Chemical Company, Limited Propylene-based resin foamed sheet and container made from the same
US20090263645A1 (en) * 2006-07-14 2009-10-22 Dow Global Technologies Inc. Anisotropic Foam-Film Composite Structures

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Application publication date: 20160127