CN104961949A - 一种热收缩膜及其生产方法 - Google Patents
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- 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
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- 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
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Abstract
本发明涉及包装技术领域,具体为一种热收缩膜及其生产方法,其能够大大降低热收缩膜的厚度,降低成本的同时保证强度,生产过程简单方便,其包括热收缩膜本体,所述括热收缩膜本体由以下重量配比的原料组成:熔融指数为0.2-0.5g/10min的高压聚乙稀40-45份;熔融指数为0.2g/10min的低压聚乙稀30-35份;熔融指数为1.7-2.3g/10min的线性低密度聚乙稀6-8份;熔融指数为0.3g/10min的茂金属聚乙稀12-20份,通过以下步骤制得:(1)按重量比称取原料;(2)将上述原料放入炼塑机内,在120-170℃温度下加热10-15min得到塑化的热料;(3)将塑化的热料通过螺杆输送机输送至挤出机中,挤出机中心进料旋转模头温度为130-160℃,通过挤出吹胀成型,超温自动风冷,得到热收缩膜。
Description
技术领域
本发明涉及包装技术领域,具体为一种热收缩膜及其生产方法。
背景技术
热收缩膜作为日常生活中常见的包装材料,广泛应用于饮料、饮用水、啤酒、牛奶、洗涤用品、食品等方面的外包装。由于其强度好、韧性大,有许多优于纸箱、PVC等传统包装的特点,具有防湿、防潮,体积小利于运输与仓储等条件,为此出现了很多热收缩包装膜,如公开号为CN103264553的一种热收缩包装彩膜及其生产方法这个专利中,其公开了一种具有抗冲击、撕裂,热封性好等特点的热收缩包装膜,其能够满足包装要求,但是其厚度为0.07-0.075mm,厚度上较厚,使得整体重量大大提升,给搬运输送带来很多不便,同时生产较厚使用原材料较多,成本比较高。
发明内容
为了解决上述问题,本发明提供了一种热收缩膜及其生产方法,其能够大大降低热收缩膜的厚度,降低成本的同时保证强度,生产过程简单方便。
其技术方案是这样的:一种热收缩膜,其特征在于,其包括热收缩膜本体,所述括热收缩膜本体由以下重量配比的原料组成:
熔融指数为0.2-0.5g/10min的高压聚乙稀 40-45份;
熔融指数为0.2g/10min的低压聚乙稀 30-35份;
熔融指数为1.7-2.3g/10min的线性低密度聚乙稀 6-8份;
熔融指数为0.3g/10min的茂金属聚乙稀 12-20份。
其进一步特征在于,所述熔融指数为0.2-0.5g/10min的高压聚乙烯为扬巴石化1810D;
所述熔融指数为0.2g/10min的低压聚乙烯为壳牌的5621D;
所述熔融指数为1.7-2.3g/10min的LLDPE线性低密度聚乙烯为扬子石化的7402;
所述 熔融指数为0.3g/10min的茂金属聚乙烯为埃克森美孚的ENABLE2703;
所述热收缩膜本体厚度为0.06-0.065mm。
一种热收缩膜的生产方法,其特征在于,其包括以下步骤:
(1)按重量比称取原料;
(2)将上述原料放入炼塑机内,在120-170℃温度下加热10-15min得到塑化的热料;
(3)将塑化的热料通过螺杆输送机输送至挤出机中,挤出机中心进料旋转模头温度为130-160℃,通过挤出吹胀成型,超温自动风冷,得到热收缩膜。
采用本发明的是技术方案后,与现有的热收缩包装膜相比减少了配方,同时改变了配方的配比,将厚度从0.07-0.075mm降低到0.06-0.065mm,降低了厚度,搬运输送方便,成本也相应变小,同时茂金属聚乙稀的加入保证热收缩膜的强度,整体生产过程简单方便。
具体实施方式
实施例一:一种热收缩膜,热收缩膜本体由以下重量配比的原料组成:熔融指数为0.2-0.5g/10min的高压聚乙稀40份,熔融指数为0.2g/10min的低压聚乙稀 35份,熔融指数为1.7-2.3g/10min的线性低密度聚乙稀8份,熔融指数为0.3g/10min的茂金属聚乙稀17份,经过加工得到热收缩膜本体厚度为0.06mm。
实施例二:一种热收缩膜,热收缩膜本体由以下重量配比的原料组成:熔融指数为0.2-0.5g/10min的高压聚乙稀43份,熔融指数为0.2g/10min的低压聚乙稀 32份,熔融指数为1.7-2.3g/10min的线性低密度聚乙稀6份,熔融指数为0.3g/10min的茂金属聚乙稀19份,经过加工得到热收缩膜本体厚度为0.065mm。
实施例三:一种热收缩膜,热收缩膜本体由以下重量配比的原料组成:熔融指数为0.2-0.5g/10min的高压聚乙稀45份,熔融指数为0.2g/10min的低压聚乙稀 35份,熔融指数为1.7-2.3g/10min的线性低密度聚乙稀8份,熔融指数为0.3g/10min的茂金属聚乙稀12份,经过加工得到热收缩膜本体厚度为0.065mm。
实施例四:一种热收缩膜,热收缩膜本体由以下重量配比的原料组成:熔融指数为0.2-0.5g/10min的高压聚乙稀44份,熔融指数为0.2g/10min的低压聚乙稀 30份,熔融指数为1.7-2.3g/10min的线性低密度聚乙稀6份,熔融指数为0.3g/10min的茂金属聚乙稀20份,经过加工得到热收缩膜本体厚度为0.055mm。
一种热收缩膜的生产方法,其包括以下步骤:
(1)按重量比称取原料;
(2)将上述原料放入炼塑机内,在120-170℃温度下加热10-15min得到塑化的热料;
(3)将塑化的热料通过螺杆输送机输送至挤出机中,挤出机中心进料旋转模头温度为130-160℃,通过挤出吹胀成型,超温自动风冷,得到热收缩膜。
Claims (7)
1.一种热收缩膜,其特征在于,其包括热收缩膜本体,所述括热收缩膜本体由以下重量配比的原料组成:
熔融指数为0.2-0.5g/10min的高压聚乙稀 40-45份;
熔融指数为0.2g/10min的低压聚乙稀 30-35份;
熔融指数为1.7-2.3g/10min的线性低密度聚乙稀 6-8份;
熔融指数为0.3g/10min的茂金属聚乙稀 12-20份。
2.根据权利要求1所述的一种热收缩膜,其特征在于,所述熔融指数为0.2-0.5g/10min的高压聚乙烯为扬巴石化1810D。
3.根据权利要求1所述的一种热收缩膜,其特征在于,所述熔融指数为0.2g/10min的低压聚乙烯为壳牌的5621D。
4.根据权利要求1所述的一种热收缩膜,其特征在于,所述熔融指数为1.7-2.3g/10min的LLDPE线性低密度聚乙烯为扬子石化的7402。
5.根据权利要求1所述的一种热收缩膜,其特征在于,所述 熔融指数为0.3g/10min的茂金属聚乙烯为埃克森美孚的ENABLE2703。
6.根据权利要求1所述的一种热收缩膜,其特征在于,所述热收缩膜本体厚度为0.06-0.065mm。
7.一种热收缩膜的生产方法,其特征在于,其包括以下步骤:
(1)按重量比称取原料;
(2)将上述原料放入炼塑机内,在120-170℃温度下加热10-15min得到塑化的热料;
(3)将塑化的热料通过螺杆输送机输送至挤出机中,挤出机中心进料旋转模头温度为130-160℃,通过挤出吹胀成型,超温自动风冷,得到热收缩膜。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105218924A (zh) * | 2015-10-16 | 2016-01-06 | 无锡市方成彩印包装有限公司 | 一种抑菌型塑料袋及其生产方法 |
CN106009184A (zh) * | 2016-07-01 | 2016-10-12 | 桐城市华猫软膜有限公司 | 一种pe热收缩膜及其制备方法 |
CN106046500A (zh) * | 2016-07-08 | 2016-10-26 | 安徽致达包装有限公司 | 一种用于烟草卷烟的pe热收缩膜包装袋生产工艺 |
CN107199650A (zh) * | 2017-06-05 | 2017-09-26 | 广州市永乐塑料制品有限公司 | 一种药用塑料袋的生产方法 |
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CN101613012A (zh) * | 2009-07-21 | 2009-12-30 | 无锡市方成彩印包装有限公司 | 一种热收缩彩色饮料包装彩膜及其生产方法 |
CN102029755A (zh) * | 2010-09-27 | 2011-04-27 | 沈阳防锈包装材料有限责任公司 | 一种阻燃可收缩防腐蚀包装膜及制造方法 |
CN103264553A (zh) * | 2013-04-28 | 2013-08-28 | 无锡市方成彩印包装有限公司 | 一种热收缩包装彩膜及其生产方法 |
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Patent Citations (3)
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CN101613012A (zh) * | 2009-07-21 | 2009-12-30 | 无锡市方成彩印包装有限公司 | 一种热收缩彩色饮料包装彩膜及其生产方法 |
CN102029755A (zh) * | 2010-09-27 | 2011-04-27 | 沈阳防锈包装材料有限责任公司 | 一种阻燃可收缩防腐蚀包装膜及制造方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105218924A (zh) * | 2015-10-16 | 2016-01-06 | 无锡市方成彩印包装有限公司 | 一种抑菌型塑料袋及其生产方法 |
CN106009184A (zh) * | 2016-07-01 | 2016-10-12 | 桐城市华猫软膜有限公司 | 一种pe热收缩膜及其制备方法 |
CN106046500A (zh) * | 2016-07-08 | 2016-10-26 | 安徽致达包装有限公司 | 一种用于烟草卷烟的pe热收缩膜包装袋生产工艺 |
CN107199650A (zh) * | 2017-06-05 | 2017-09-26 | 广州市永乐塑料制品有限公司 | 一种药用塑料袋的生产方法 |
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