CN104558761A - 一种高温液体塑料薄膜 - Google Patents
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Abstract
本发明公开了一种高温液体塑料薄膜,按重量份数计由以下原料组成:高密度聚乙烯50~90份、改性剂0.5~10份、茂金属0.5~10份、线性聚乙烯3~10份和食用色素0.1~2份。本发明的高温液体塑料薄膜耐高温,安全性好,广泛用于牛奶、豆浆等液体食品的包装。
Description
技术领域
本发明属于化工技术领域,具体的是一种高温液体塑料薄膜。
背景技术
我国塑料薄膜的产量约占塑料制品总产量的20%,是塑料制品中产量增长较快的类别之一。随着我国包装、农业等领域对塑料薄膜的需求量不但增大,预计我国塑料薄膜的需求量每年将以9%以上的速度增长,其市场前景十分广阔。
在塑料包装材料中,薄膜材料的市场需求量增幅最大,约占塑料包装材料总量的46%。塑料包装薄膜主要包括:热收缩包装薄膜、缠绕包装薄膜、食品无菌包装膜、果蔬保鲜膜、液体包装薄膜等。随着我国塑料薄膜行业装备水平不断提高,有的已经达到发达国家的先进水平,涌现出了一批新产品,例如,作为复合包装基材的双向拉伸薄膜不但克服了长期进口的局面,而且现在每年还出口30万吨左右,创汇30多亿美元。我国上规模的包装薄膜制造企业的数量发展迅速,目前已达到2240家。
食品无菌包装膜是指能够耐受食品(如奶制品、饮料、调味料)进行瞬间灭菌所需的超高温的食品包装用薄膜,该包装膜能使食品在不加防腐剂,不经冷藏的情况下具有较长的货架寿命,这是一项新技术,也是塑料包装的发展方向之一。食品无菌包装分为两种,一种是容量为5~1000L的无菌大包装袋,制袋的复合膜主要采用PET镀铝膜和PE膜复合而成;另一种为无菌杯式包装,使用的是PP/PE/EVA/PVDC/PS多层共挤复合膜,其中PP为保护层膜,EVA为粘结层,PVDC为氧气阻隔层。
发明内容
本发明的目的是提供一种耐高温的液体塑料薄膜,以克服现有技术中食品包装塑料薄膜不耐高温的现状,只能在常温下对食品进行分装,进而造成食品分装之后容易变质。本发明所提供的技术方案是:
一种高温液体塑料薄膜,按重量份数计由以下原料组成:高密度聚乙烯50~90份、改性剂0.5~10份、茂金属0.5~10份、线性聚乙烯3~10份和食用色素0.1~2份。
作为优选,所述高温液体塑料薄膜,按重量份数计由以下原料组成:高密度聚乙烯70~90份、改性剂0.5~5份、茂金属1.5~8份、线性聚乙烯4~8份和食用色素0.2~1份。
作为优选,所述改性剂为CPE、ACR、MBS、SBS、ABS和EVA中的至少一种。
作为优选,所述食用色素为钛白粉、氧化锌、锌钡白中的至少一种。
本发明还提供了该高温液体塑料薄膜的制备方法,其特征在于,包括以下步骤:
(1)按配方量取各组分,混合,并搅拌,采用回馏方式,控制温度100~150℃,使物料彻底溶解,得到混合液;
(2)将混合液在100~130℃下静置1~2小时,倒入预热至90~100℃的平流模具,流延到室温的镜面钢板上,使混合液急冷迅速凝胶,将其从钢板上剥离制得高温液体塑料薄膜。
本发明还提供了高温液体塑料薄膜在牛奶、豆浆等液体食品包装中的应用。
本技术方案的有益效果
1、本发明的高温液体塑料薄膜生产工艺简单,原料成本低,易于大规模推广和使用。
2、发明的高温液体塑料薄膜配方合理,耐高温性能好,非常适合用于牛奶、豆浆等需要在高温下分装的食品。
具体实施方式
下面结合具体例对本发明作进一步详细的说明。实施例中所提到的中草药按药典规定药用部位
实施例1:
将下列组分按重量配比份计:高密度聚乙烯70份、CPE 0.5份、茂金属1.5份、线性聚乙烯4份和钛白粉0.2份。
本发明还提供了该高温液体塑料薄膜的制备方法,其特征在于,包括以下步骤:
(1)按配方量取各组分,混合,并搅拌,采用回馏方式,控制温度100℃,使物料彻底溶解,得到混合液;
(2)将混合液在100℃下静置1小时,倒入预热至100℃的平流模具,流延到室温的镜面钢板上,使混合液急冷迅速凝胶,将其从钢板上剥离制得高温液体塑料薄膜。
实施例2:
将下列组分按重量配比份计:高密度聚乙烯90份、MBS 5份、茂金属8份、线性聚乙烯8份和氧化锌1份。
本发明还提供了该高温液体塑料薄膜的制备方法,其特征在于,包括以下步骤:
(1)按配方量取各组分,混合,并搅拌,采用回馏方式,控制温度150℃,使物料彻底溶解,得到混合液;
(2)将混合液在130℃下静置2小时,倒入预热至100℃的平流模具,流延到室温的镜面钢板上,使混合液急冷迅速凝胶,将其从钢板上剥离制得高温液体塑料薄膜。
实施例3:
将下列组分按重量配比份计:高密度聚乙烯85份、ABS 2份、茂金属3份、线性聚乙烯5份和锌钡白0.5份。
本发明还提供了该高温液体塑料薄膜的制备方法,其特征在于,包括以下步骤:
(1)按配方量取各组分,混合,并搅拌,采用回馏方式,控制温度120℃,使物料彻底溶解,得到混合液;
(2)将混合液在125℃下静置1.5小时,倒入预热至95℃的平流模具,流延到室温的镜面钢板上,使混合液急冷迅速凝胶,将其从钢板上剥离制得高温液体塑料薄膜。
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式,并且很显然,根据上述教导,可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用,从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。
Claims (6)
1.一种高温液体塑料薄膜,按重量份数计由以下原料组成:高密度聚乙烯50~90份、改性剂0.5~10份、茂金属0.5~10份、线性聚乙烯3~10份和食用色素0.1~2份。
2.如权利要求1所述的高温液体塑料薄膜,其特征在于,按重量份数计由以下原料组成:高密度聚乙烯70~90份、改性剂0.5~5份、茂金属1.5~8份、线性聚乙烯4~8份和食用色素0.2~1份。
3.如权利要求1或2所述的高温液体塑料薄膜,其特征在于,所述改性剂为CPE、ACR、MBS、SBS、ABS和EVA中的至少一种。
4.如权利要求1或2所述的高温液体塑料薄膜,其特征在于,所述食用色素为钛白粉、氧化锌、锌钡白中的至少一种。
5.一种如权利要求1或2所述的高温液体塑料薄膜的制备方法,其特征在于,包括以下步骤:
(1)按配方量取各组分,混合,并搅拌,采用回馏方式,控制温度100~150℃,使物料彻底溶解,得到混合液;
(2)将混合液在100~130℃下静置1~2小时,倒入预热至90~100℃的平流模具,流延到室温的镜面钢板上,使混合液急冷迅速凝胶,将其从钢板上剥离制得高温液体塑料薄膜。
6.一种如权利要求1或2所述的高温液体塑料薄膜在牛奶、豆浆等液体食品包装中的应用。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105924752A (zh) * | 2016-07-06 | 2016-09-07 | 苏州科淼新材料有限公司 | 一种耐高温hdpe塑料薄膜料及其制备方法 |
CN106146982A (zh) * | 2016-07-28 | 2016-11-23 | 陈林美 | 一种环保抗撕裂pe薄膜配方 |
CN107353548A (zh) * | 2017-08-15 | 2017-11-17 | 安徽华猫软包装有限公司 | 一种水解塑料薄膜及其制备方法 |
CN110154478A (zh) * | 2019-06-11 | 2019-08-23 | 福建富一锦科技有限公司 | 一种透明牛奶包装膜及其制备方法 |
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CN103625052A (zh) * | 2013-08-02 | 2014-03-12 | 苏州艾兴无纺布制品有限公司 | 一种超薄高阻隔性薄膜及其制作工艺 |
CN103694538A (zh) * | 2013-12-09 | 2014-04-02 | 安徽大诚明农业科技有限公司 | 一种草莓双防聚乙烯农用棚膜 |
CN103724791A (zh) * | 2014-01-02 | 2014-04-16 | 苏州艾兴无纺布制品有限公司 | 超高性能塑料薄膜及其制备方法和复合材料 |
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CN1796449A (zh) * | 2004-12-24 | 2006-07-05 | 李延明 | 气相防锈热收缩薄膜 |
CN103625052A (zh) * | 2013-08-02 | 2014-03-12 | 苏州艾兴无纺布制品有限公司 | 一种超薄高阻隔性薄膜及其制作工艺 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105924752A (zh) * | 2016-07-06 | 2016-09-07 | 苏州科淼新材料有限公司 | 一种耐高温hdpe塑料薄膜料及其制备方法 |
CN106146982A (zh) * | 2016-07-28 | 2016-11-23 | 陈林美 | 一种环保抗撕裂pe薄膜配方 |
CN107353548A (zh) * | 2017-08-15 | 2017-11-17 | 安徽华猫软包装有限公司 | 一种水解塑料薄膜及其制备方法 |
CN110154478A (zh) * | 2019-06-11 | 2019-08-23 | 福建富一锦科技有限公司 | 一种透明牛奶包装膜及其制备方法 |
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