CN104558762A - 食品用薄膜及其生产方法 - Google Patents

食品用薄膜及其生产方法 Download PDF

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CN104558762A
CN104558762A CN201410735237.4A CN201410735237A CN104558762A CN 104558762 A CN104558762 A CN 104558762A CN 201410735237 A CN201410735237 A CN 201410735237A CN 104558762 A CN104558762 A CN 104558762A
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density polyethylene
propylene
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刘桂荣
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NANNING JINZHUANG PLASTIC COLOR PRINTING Co Ltd
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
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    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract

本发明公开了一种食品用薄膜，按重量份数计包括以下组分：高密度聚乙烯70～80份、茂金属线性低密度聚乙烯5～10份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种5～10份、高阻隔聚对苯二甲酸乙二醇脂5～15份、钛白粉0.1～1份、填料1～5份。本发明的食品用薄膜，阻隔性和气密性好，具有良好的抗污染性，且强度高。制备方法简单，易于操作，投资成本低，利于大规模生产。

Description

食品用薄膜及其生产方法
技术领域
本发明涉及包装膜领域，特别涉及一种食品用薄膜及其生产方法。
背景技术
目前的食品包装行业说需要的包装基材膜数量大、种类多，采用单一原料生产的薄膜很难适应特殊食品的包装要求。究其原因，主要是各生产塑料原料的厂家虽然生产工艺各有千秋，但每种原料都有其不足之处，所以生产出来的薄膜很难满足各种情况的需求。虽然一些公司也有采用不同原料混合使用的做法，但由于缺少必要的试验设备和检测设备以及系统的试验方案，其效果并不理想。
公开于该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
发明内容
为了克服现有技术存在的问题，本发明的目的在于提供一种高阻隔性、高气密性、高强度的食品用薄膜。
为实现上述目的，本发明提供了一种食品用薄膜，按重量份数计包括以下组分：高密度聚乙烯70～80份、茂金属线性低密度聚乙烯5～10份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种5～10份、高阻隔聚对苯二甲酸乙二醇脂5～15份、钛白粉0.1～1份、填料1～5份。
优选地，上述技术方案中，所述的食品用薄膜，按重量份数计包括以下组分：高密度聚乙烯75份、茂金属线性低密度聚乙烯6份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种7份、高阻隔聚对苯二甲酸乙二醇脂11份、钛白粉0.5份、填料3份。
优选地，上述技术方案中，所述的填料为织物纤维。
一种食品用薄膜的制备方法，包括以下步骤：
(1)按需要称取生产所需的原料；
(2)将原料混合，采用回馏方式，控制温度150～200℃，以转速为80～100r/min的速度搅拌物料，使物料彻底溶解，得到混合液；
(3)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。
与现有技术相比，本发明具有如下有益效果：本发明的食品用薄膜，阻隔性和气密性好，具有良好的抗污染性，且强度高。制备方法简单，易于操作，投资成本低，利于大规模生产。
具体实施方式
下面结合具体实施例，对本发明的具体实施方式进行详细描述，但应当理解本发明的保护范围并不受具体实施方式的限制。
实施例1
一种食品用薄膜的制备方法，包括以下步骤：
(1)按需要称取生产所需的原料，按重量份数计包括以下组分：高密度聚乙烯75份、茂金属线性低密度聚乙烯6份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种7份、高阻隔聚对苯二甲酸乙二醇脂11份、钛白粉0.5份、填料3份；
(2)将原料混合，采用回馏方式，控制温度170℃，以转速为90r/min的速度搅拌物料，使物料彻底溶解，得到混合液；
(3)将混合液在120℃下静置1.5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
一种食品用薄膜的制备方法，包括以下步骤：
(1)按需要称取生产所需的原料，按重量份数计包括以下组分：高密度聚乙烯70份、茂金属线性低密度聚乙烯5份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种5份、高阻隔聚对苯二甲酸乙二醇脂5份、钛白粉0.1份、填料1份；
(2)将原料混合，采用回馏方式，控制温度150℃，以转速为80r/min的速度搅拌物料，使物料彻底溶解，得到混合液；
(3)将混合液在100℃下静置1小时，倒入预热至90℃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
一种食品用薄膜的制备方法，包括以下步骤：
(1)按需要称取生产所需的原料，按重量份数计包括以下组分：高密度聚乙烯80份、茂金属线性低密度聚乙烯10份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种10份、高阻隔聚对苯二甲酸乙二醇脂15份、钛白粉1份、填料5份；
(2)将原料混合，采用回馏方式，控制温度200℃，以转速为100r/min的速度搅拌物料，使物料彻底溶解，得到混合液；
(3)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。
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 (4)

1.一种食品用薄膜，其特征在于，按重量份数计包括以下组分：高密度聚乙烯70～80份、茂金属线性低密度聚乙烯5～10份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种5～10份、高阻隔聚对苯二甲酸乙二醇脂5～15份、钛白粉0.1～1份、填料1～5份。
2.根据权利要求1所述的食品用薄膜，其特征在于，按重量份数计包括以下组分：高密度聚乙烯75份、茂金属线性低密度聚乙烯6份、乙烯-丙烯二元共聚聚丙烯或乙烯-丙烯-丁烯三元共聚聚丙烯中的一种7份、高阻隔聚对苯二甲酸乙二醇脂11份、钛白粉0.5份、填料3份。
3.根据权利要求1所述的食品用薄膜，其特征在于，所述的填料为织物纤维。
4.一种根据权利要求1所述食品用薄膜的制备方法，其特征在于，包括以下步骤：
(1)按需要称取生产所需的原料；
(2)将原料混合，采用回馏方式，控制温度150～200℃，以转速为80～100r/min的速度搅拌物料，使物料彻底溶解，得到混合液；
(3)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。
CN201410735237.4A 2014-12-05 2014-12-05 食品用薄膜及其生产方法 Pending CN104558762A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999757A (zh) * 2015-08-04 2015-10-28 厉善君 用于食用酒的无菌包装材料以及无菌包装容器

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US5344714A (en) * 1992-11-04 1994-09-06 Mobil Oil Corporation LLDPE composite film free of melt fracture
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CN101190980A (zh) * 2006-11-23 2008-06-04 朱庆寿 透气、保湿食用菌栽培袋的塑料配方

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US5344714A (en) * 1992-11-04 1994-09-06 Mobil Oil Corporation LLDPE composite film free of melt fracture
CN1235988A (zh) * 1998-05-18 1999-11-24 四川联合大学 聚乙烯/聚对苯二甲酸乙二醇酯合金型单层阻隔包装材料
CN101190980A (zh) * 2006-11-23 2008-06-04 朱庆寿 透气、保湿食用菌栽培袋的塑料配方

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999757A (zh) * 2015-08-04 2015-10-28 厉善君 用于食用酒的无菌包装材料以及无菌包装容器

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Application publication date: 20150429