CN107216595A - 一种环保保鲜膜及其生产工艺 - Google Patents

一种环保保鲜膜及其生产工艺 Download PDF

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CN107216595A
CN107216595A CN201710583960.9A CN201710583960A CN107216595A CN 107216595 A CN107216595 A CN 107216595A CN 201710583960 A CN201710583960 A CN 201710583960A CN 107216595 A CN107216595 A CN 107216595A
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吴旭
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Hefei Peak Energy Saving Technology Co Ltd
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Abstract

本发明提供了一种环保保鲜膜及其生产工艺,所述环保保鲜膜包括以下按重量份计的原料:SEBS树脂80‑120份,聚乳酸20‑40份,抗氧化剂0.5‑1.5份,抗菌剂0.6‑1.2份,增韧剂0.5‑1.5份,敏化剂1.5‑2.5份。采用本发明的环保保鲜膜,可以在大大降低生产成本的同时保持薄膜本身的高强度,其拉伸强度、断裂伸长率、摩擦系数、透光率均符合国家标准,同时还具有良好的食品包装抗菌保鲜性能。

Description

一种环保保鲜膜及其生产工艺
技术领域
本发明涉及环保材料技术领域,具体涉及一种环保保鲜膜及其生产工艺。
背景技术
目前,市售保鲜膜按原材料不同可分为三大类:第一类是聚偏二氯乙烯(PVDC),主要用于熟食、火腿肠等保质期长、大规模工业化产品的包装;第二类是聚乙烯(PE),主要用于普通水果、蔬菜等的包装;第三类即是人们使用较多的聚氯乙烯(PVC)。其中,聚乙烯、聚氯乙烯保鲜膜在日常生活中使用相当广泛,从蔬菜、水果到家庭食品的临时保鲜,以及防止食品存放时串味,都要使用保鲜膜。保鲜膜的自粘性主要依靠塑料自身特性实现,不能使粘合剂。
然而,PE保鲜膜透明度一般,延伸性能不够,很容易破裂;而且在自粘性方面存在严重不足,自粘性不强,在塑料盒上很难使用,包装速度慢,不利于机械化包装。
相反,PVC保鲜膜透明度高,延伸性好,不容易破裂,粘合性能好,包装速度快,适合于机械化包装;所以超市、商场出售的食品,特别是分隔鱼、肉等所使用的保鲜膜基本是PVC保鲜膜。但PVC保鲜膜存在如下问题:
1.单体问题,聚氯乙烯不可避免地存在聚合时残留的氯乙烯单体(VCM),浓度超标将对人体造成严重危害(损害神经系统、肝脏和胚胎);
2.添加剂问题,聚氯乙烯保鲜膜在生产时,需要加入各种添加剂(稳定剂、增塑剂等),它们长期接触含油食品,尤其夏季温度较高时,很容易从保鲜膜中迁移析出,渗入并残留在食物中,对人类健康造成危害;
3.环保问题,PVC自身不能生物降解,在光/热作用下,降解也很缓慢,若采用焚烧处理,将产生大量刺激性、腐蚀性气体,燃烧不彻底时还会产生严重致癌物质。
发明内容
本发明的目的是针对现有技术的问题,提供一种环保保鲜膜及其生产工艺。
为了达到上述目的,本发明通过以下技术方案来实现:
一种环保保鲜膜,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂80-120份,
聚乳酸20-40份,
抗氧化剂0.5-1.5份,
抗菌剂0.6-1.2份,
增韧剂0.5-1.5份,
敏化剂1.5-2.5份。
进一步地,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂102份,
聚乳酸30份,
抗氧化剂1份,
抗菌剂0.9份,
增韧剂1份,
敏化剂2份。
进一步地,所述SEBS树脂选自高分子量SEBS、和低分子量SEBS中的一种或两种。
进一步地,所述抗氧化剂为丁基羟基茴香醚。
进一步地,所述增韧剂为丙烯酸酯类聚合物。
进一步地,所述敏化剂为安息香二甲醚。
进一步地,所述抗菌剂选自氧化银、载银磷酸锆、亚甲基双硫氰酸酯和甲壳素中的一种或几种。
一种环保保鲜膜的生产工艺,包括以下步骤:
(1)按所需重量份准备好各项原料:SEBS树脂80-120份,聚乳酸20-40份,抗氧化剂0.5-1.5份,抗菌剂0.6-1.2份,增韧剂0.5-1.5份和敏化剂1.5-2.5份;
(2)将所述各项原料混合后加热熔化挤出,在塑料挤出吹膜机中挤出成型的保鲜薄膜;
(3)将步骤(2)中得到的薄膜按照不同尺寸的产品规格进行卷膜切割,检查合格后即得到所述环保保鲜膜。
本发明与现有技术相比,具有如下的有益效果:
本发明采用SEBS树脂、聚乳酸、抗氧化剂、抗菌剂、增韧剂和敏化剂为原料,在生产过程中不使用二辛酯等增塑剂,不含卤素元素,是一种卫生、安全环保的新型包装材料,使用敏化剂可以使产品更加的容易分解,且分解后的产物无污染,具有绿色环保的性能。在聚乳酸中加入增韧剂,二者可保持材料的强度和延展性能;抗菌剂中的抗菌因子溶于聚乳酸和SEBS树脂中,使乳酸链球菌肽和抗菌因子牢固镶嵌于保鲜膜表面,增加了保鲜膜的抑菌性能。此外本发明还具有优异的透明性、自粘性,以及优良的机械性能。采用本发明的环保保鲜膜,可以在大大降低生产成本的同时保持薄膜本身的高强度,其拉伸强度、断裂伸长率、摩擦系数、透光率均符合国家标准,同时还具有良好的食品包装抗菌保鲜性能。
具体实施方式
下面结合实施例对本发明作进一步说明。
实施例1
一种环保保鲜膜,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂80份,
聚乳酸20份,
抗氧化剂0.5份,
抗菌剂0.6份,
增韧剂0.5份,
敏化剂1.5份。
所述SEBS树脂选自高分子量SEBS、和低分子量SEBS中的一种或两种。
所述抗氧化剂为丁基羟基茴香醚。
所述增韧剂为丙烯酸酯类聚合物。
所述敏化剂为安息香二甲醚。
所述抗菌剂选自氧化银、载银磷酸锆、亚甲基双硫氰酸酯和甲壳素中的一种或几种。
一种环保保鲜膜的生产工艺,包括以下步骤:
(1)按所需重量份准备好各项原料:SEBS树脂80份,聚乳酸20份,抗氧化剂0.5份,抗菌剂0.6份,增韧剂0.5份和敏化剂1.5份;
(2)将所述各项原料混合后加热熔化挤出,在塑料挤出吹膜机中挤出成型的保鲜薄膜;
(3)将步骤(2)中得到的薄膜按照不同尺寸的产品规格进行卷膜切割,检查合格后即得到所述环保保鲜膜。
本发明采用SEBS树脂、聚乳酸、抗氧化剂、抗菌剂、增韧剂和敏化剂为原料,在生产过程中不使用二辛酯等增塑剂,不含卤素元素,是一种卫生、安全环保的新型包装材料,使用敏化剂可以使产品更加的容易分解,且分解后的产物无污染,具有绿色环保的性能。在聚乳酸中加入增韧剂,二者可保持材料的强度和延展性能;抗菌剂中的抗菌因子溶于聚乳酸和SEBS树脂中,使乳酸链球菌肽和抗菌因子牢固镶嵌于保鲜膜表面,增加了保鲜膜的抑菌性能。此外本发明还具有优异的透明性、自粘性,以及优良的机械性能。采用本发明的环保保鲜膜,可以在大大降低生产成本的同时保持薄膜本身的高强度,其拉伸强度、断裂伸长率、摩擦系数、透光率均符合国家标准,同时还具有良好的食品包装抗菌保鲜性能。
实施例2
一种环保保鲜膜,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂120份,
聚乳酸40份,
抗氧化剂1.5份,
抗菌剂1.2份,
增韧剂1.5份,
敏化剂2.5份。
所述SEBS树脂选自高分子量SEBS、和低分子量SEBS中的一种或两种。
所述抗氧化剂为丁基羟基茴香醚。
所述增韧剂为丙烯酸酯类聚合物。
所述敏化剂为安息香二甲醚。
所述抗菌剂选自氧化银、载银磷酸锆、亚甲基双硫氰酸酯和甲壳素中的一种或几种。
一种环保保鲜膜的生产工艺,包括以下步骤:
(1)按所需重量份准备好各项原料:SEBS树脂120份,聚乳酸40份,抗氧化剂1.5份,抗菌剂1.2份,增韧剂1.5份和敏化剂2.5份;
(2)将所述各项原料混合后加热熔化挤出,在塑料挤出吹膜机中挤出成型的保鲜薄膜;
(3)将步骤(2)中得到的薄膜按照不同尺寸的产品规格进行卷膜切割,检查合格后即得到所述环保保鲜膜。
本发明采用SEBS树脂、聚乳酸、抗氧化剂、抗菌剂、增韧剂和敏化剂为原料,在生产过程中不使用二辛酯等增塑剂,不含卤素元素,是一种卫生、安全环保的新型包装材料,使用敏化剂可以使产品更加的容易分解,且分解后的产物无污染,具有绿色环保的性能。在聚乳酸中加入增韧剂,二者可保持材料的强度和延展性能;抗菌剂中的抗菌因子溶于聚乳酸和SEBS树脂中,使乳酸链球菌肽和抗菌因子牢固镶嵌于保鲜膜表面,增加了保鲜膜的抑菌性能。此外本发明还具有优异的透明性、自粘性,以及优良的机械性能。采用本发明的环保保鲜膜,可以在大大降低生产成本的同时保持薄膜本身的高强度,其拉伸强度、断裂伸长率、摩擦系数、透光率均符合国家标准,同时还具有良好的食品包装抗菌保鲜性能。
实施例3
一种环保保鲜膜,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂102份,
聚乳酸30份,
抗氧化剂1份,
抗菌剂0.9份,
增韧剂1份,
敏化剂2份。
所述SEBS树脂选自高分子量SEBS、和低分子量SEBS中的一种或两种。
所述抗氧化剂为丁基羟基茴香醚。
所述增韧剂为丙烯酸酯类聚合物。
所述敏化剂为安息香二甲醚。
所述抗菌剂选自氧化银、载银磷酸锆、亚甲基双硫氰酸酯和甲壳素中的一种或几种。
一种环保保鲜膜的生产工艺,包括以下步骤:
(1)按所需重量份准备好各项原料:SEBS树脂102份,聚乳酸30份,抗氧化剂1份,抗菌剂0.9份,增韧剂1份,敏化剂2份;
(2)将所述各项原料混合后加热熔化挤出,在塑料挤出吹膜机中挤出成型的保鲜薄膜;
(3)将步骤(2)中得到的薄膜按照不同尺寸的产品规格进行卷膜切割,检查合格后即得到所述环保保鲜膜。
本发明采用SEBS树脂、聚乳酸、抗氧化剂、抗菌剂、增韧剂和敏化剂为原料,在生产过程中不使用二辛酯等增塑剂,不含卤素元素,是一种卫生、安全环保的新型包装材料,使用敏化剂可以使产品更加的容易分解,且分解后的产物无污染,具有绿色环保的性能。在聚乳酸中加入增韧剂,二者可保持材料的强度和延展性能;抗菌剂中的抗菌因子溶于聚乳酸和SEBS树脂中,使乳酸链球菌肽和抗菌因子牢固镶嵌于保鲜膜表面,增加了保鲜膜的抑菌性能。此外本发明还具有优异的透明性、自粘性,以及优良的机械性能。采用本发明的环保保鲜膜,可以在大大降低生产成本的同时保持薄膜本身的高强度,其拉伸强度、断裂伸长率、摩擦系数、透光率均符合国家标准,同时还具有良好的食品包装抗菌保鲜性能。
以上仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一种环保保鲜膜,其特征在于,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂80-120份,
聚乳酸20-40份,
抗氧化剂0.5-1.5份,
抗菌剂0.6-1.2份,
增韧剂0.5-1.5份,
敏化剂1.5-2.5份。
2.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述环保保鲜膜包括以下按重量份计的原料:
SEBS树脂102份,
聚乳酸30份,
抗氧化剂1份,
抗菌剂0.9份,
增韧剂1份,
敏化剂2份。
3.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述SEBS树脂选自高分子量SEBS、和低分子量SEBS中的一种或两种。
4.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述抗氧化剂为丁基羟基茴香醚。
5.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述增韧剂为丙烯酸酯类聚合物。
6.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述敏化剂为安息香二甲醚。
7.根据权利要求1所述的一种环保保鲜膜,其特征在于,所述抗菌剂选自氧化银、载银磷酸锆、亚甲基双硫氰酸酯和甲壳素中的一种或几种。
8.一种如权利要求1-7任意一项所述的环保保鲜膜的生产工艺,其特征在于,包括以下步骤:
(1)按所需重量份准备好各项原料:SEBS树脂80-120份,聚乳酸20-40份,抗氧化剂0.5-1.5份,抗菌剂0.6-1.2份,增韧剂0.5-1.5份和敏化剂1.5-2.5份;
(2)将所述各项原料混合后加热熔化挤出,在塑料挤出吹膜机中挤出成型的保鲜薄膜;
(3)将步骤(2)中得到的薄膜按照不同尺寸的产品规格进行卷膜切割,检查合格后即得到所述环保保鲜膜。
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