CN109304918A - 调料袋原料薄膜及生产方法 - Google Patents
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Abstract
本发明涉及薄膜技术领域,公开了一种调料袋原料薄膜及生产方法,包括基层、隔热层与防潮层,基层上依次设置隔热层、防潮层,基层由以下重量份数的组分组成:聚丙烯15‑23份、填充剂30‑42份、抗菌剂5‑10份、抗氧化剂2‑5份以及防腐剂1‑3份。本发明能够解决现有技术中塑料薄膜安全性差及防潮、隔热效果不佳的问题。
Description
技术领域
本发明涉及薄膜技术领域,具体涉及了一种调料袋原料薄膜及生产方法。
背景技术
近年来,塑料包装薄膜的生产和应用得到了快速的发展,其具有质量轻、弹性好、阻隔性良好等特点,相比于瓶、桶或者箱等容器,使用塑料薄膜进行包装,更加节省空间,同时还便于运输。在食品行业,塑料包装薄膜也应用广泛。但目前塑料包装薄膜存在一些问题:第一,在包装食品时,有的薄膜在受热后容易融化变质而影响到包装的食品,其食用安全性不高;第二,防潮、隔热等功能较差,使包装在内的食品很容易受潮、受热,长时间甚至容易导致食品变质,不利于食品的销售和使用,如很多调味品(如食盐、味精等)多采用塑料薄膜进行包装,这类调味品容易吸水而结晶固化,在包装薄膜防潮功能较差的情况下易影响调味品使用。
发明内容
本发明的目的是提供一种调料袋原料薄膜及生产方法,以解决现有技术中塑料薄膜安全性差及防潮、隔热效果不佳的问题。
为实现上述目的,本发明采用的技术方案如下:
调料袋原料薄膜,包括基层、隔热层与防潮层,基层上依次设置隔热层、防潮层,基层由以下重量份数的组分组成:聚丙烯15-23份、填充剂30-42份、抗菌剂5-10份、抗氧化剂2-5份以及防腐剂1-3份。
与现有技术相比,本发明的原理及有益效果:通过设置隔热层,达到隔绝热量的效果,防止包装内的调味品受热变质。通过设置防潮层,起到良好的隔绝水分作用,增加薄膜的防潮功能,避免包装内的调味品吸水而结晶固化。对于基层,采用聚丙烯作为原料,因其本身无毒无味,且比重轻,属于环保型原料,一方面能够提高薄膜包装的安全性,另一方面使薄膜更加环保;基层中的填充剂作为辅料,可以起着增量补强的作用,降低薄膜的破损;加入抗菌剂、抗氧化剂及防腐剂,使薄膜具有抗菌、抗氧化及防腐作用,能够防止调味品变质,而目前食品加工中多采取在食品里加入抗菌剂、抗氧化剂及防腐剂等食品添加剂,长期食用对人体的健康有一定影响,尤其是年龄小的儿童,而本发明采用的这种在包装薄膜中加入抗菌剂、抗氧化剂及防腐剂的方式不仅能够达到抗菌、抗氧化及防腐的效果,还能够降低人体对抗菌剂、抗氧化剂及防腐剂的摄入,提高了食品的食用安全性。
进一步,所述填充剂为碳酸钙、二氧化硅、滑石粉中的至少一种。以提高薄膜的强度、透明度及光滑度,从而提高薄膜的质量。
进一步,所述抗菌剂为香草醛类化合物、纳米氧化锌、银离子抗菌剂中的一种。此类抗菌剂既能够达到抗菌的效果,又不会像重金属对人体健康造成损害。
进一步,所述抗氧化剂为二丁基羟基甲苯、丁基羟基茴香醚、叔丁基对苯二酚、没食子酸丙酯中的一种。
进一步,所述防腐剂为苯甲酸类防腐剂、山梨酸类防腐剂、纳他霉素中的一种。
一种调料袋原料薄膜的生产方法,包括以下步骤:
(1)按照组分比例称取原料,再分别将基层、隔热层及防潮层的原料均匀混合;
(2)将步骤(1)中每层的原料分别加入到挤出机的三个挤出装置中,依次经挤出模头挤出、冷却套管冷却、人字板挤压后,各自形成单层薄膜;
(3)步骤(2)中的各单层薄膜经牵引辊牵引至对辊处,再经对辊加热、整合辊压,最后制备得到具有基层、隔热层及防潮层结构的调料袋原料薄膜。
本发明提供的生产方法通过挤出机中的三个挤出装置将每层的原料挤出成管状膜泡(即膜管),从挤出装置中挤出的膜管首先经过冷却套管进行冷却成型,冷却后的膜管在人字板的挤压下从管状变成平面,从而形成单层薄膜。接着各单层薄膜在牵引辊的牵引下,一方面可以再次被挤压成型,另一方面到达对辊处会合,对辊转动将三层薄膜进行整合辊压,同时进行加热,使辊压成型效果更好,最后制备得到具有基层、隔热层及防潮层结构的调料袋原料薄膜。
通过该生产方法制得的调料袋原料薄膜,具有良好的成型性和强度性能,同时具有隔热、防潮的作用,还能够对包装在其内的调味品起到抗菌、抗氧化及防腐的作用,提高了食品的食用安全性。
附图说明
图1为本发明实施例中挤出机的示意图。
具体实施方式
下面通过具体实施方式进一步详细说明:
说明书附图1中的附图标记包括:挤出装置1、料箱2、螺旋送料管3、冷却套管4、人字板5、牵引辊6、对辊7、加热丝8、导向辊9、收料辊10。
一、实施例数据如表1所示:
表1
实施例 | 聚丙烯 | 填充剂 | 抗菌剂 | 抗氧化剂 | 防腐剂 |
1 | 15 | 42 | 5 | 2 | 1 |
2 | 17 | 38 | 6 | 2 | 1 |
3 | 19 | 35 | 7 | 3 | 2 |
4 | 21 | 33 | 9 | 4 | 3 |
5 | 23 | 30 | 10 | 5 | 3 |
以实施例1为例,具体说明表1中形成的调料袋原料薄膜,包括基层、隔热层与防潮层,基层上依次设置隔热层、防潮层,其中基层由以下重量份数的组分组成:聚丙烯15份、填充剂42份、抗菌剂5份、抗氧化剂2份以及防腐剂1份。
上述实施例1至5中,填充剂为碳酸钙、二氧化硅、滑石粉中的至少一种。
上述实施例1至5中,抗菌剂为香草醛类化合物、纳米氧化锌、银离子抗菌剂中的一种。
上述实施例1至5中,抗氧化剂为二丁基羟基甲苯、丁基羟基茴香醚、叔丁基对苯二酚、没食子酸丙酯中的一种。
上述实施例1至5中,防腐剂为苯甲酸类防腐剂、山梨酸类防腐剂、纳他霉素中的一种。
设置实验验证:
将由实施例3中调料袋原料薄膜制成的包装袋作为本次实验的实验组,将购买于市场上的普通薄膜包装袋、隔热性薄膜包装袋、防水性薄膜包装袋、抗菌性薄膜包装袋、抗氧性薄膜包装袋及防腐性薄膜包装袋分别作为对照组1、对照组2、对照组3、对照组4、对照组5及对照组6,并进行如下实验1至6:
1、隔热性检测
将实验组、对照组1和对照组2内分别各插入一个温度计,并将所有包装袋密封,然后将三个包装袋置于加热箱内进行加热,观察各温度计的变化。
2、防潮性检测
将实验组、对照组1和对照组3内分别各插入一个湿度计,并将所有包装袋密封,然后将三个包装袋置于同一环境下,并通过加湿器改变环境湿度,观察各湿度计的变化。
3、抗菌性检测
将实验组、对照组1和对照组4内分别装入相同的调味品,并将所有包装袋密封,再将三个包装袋置于同一环境下,三天后取出检测每个包装袋内细菌含量。
4、抗氧化性检测
将实验组、对照组1和对照组5内分别放入装有相同苯酚的玻璃管(由于苯酚具有腐蚀性,最好不要直接接触包装袋),并将所有包装袋密封,记录三组中苯酚开始变色的时间。(苯酚被氧化会由无色变成粉色。)
5、防腐性检测
将实验组、对照组1和对照组6内分别装入相同的调味品,并将所有包装袋密封,再将三个包装袋置于同一环境下,一个月后取出检测每个包装袋内微生物含量。
上述实验1至6的结论如表2所示:
表2
隔热性 | 防潮性 | 抗菌性 | 抗氧化性 | 防腐性 | |
实验组 | 是 | 是 | 是 | 是 | 是 |
对照组1 | 否 | 否 | 否 | 否 | 否 |
对照组2 | 是 | -- | -- | -- | -- |
对照组3 | -- | 是 | -- | -- | -- |
对照组4 | -- | -- | 是 | -- | -- |
对照组5 | -- | -- | -- | 是 | -- |
对照组6 | -- | -- | -- | -- | 是 |
注:表2中“是”表示具有该性质,“否”表示不具有该性质,“--”表示未进行实验。
经实验检测证明,本发明的调料袋原料薄膜具有隔热、防潮的功能,同时还能够对包装在内的调味品起到抗菌、抗氧化及防腐的作用,提高了食品的食用安全性。
二、以表1中实施例3为例,介绍调料袋原料薄膜的生产方法,具体制备过程如下:
1、按照组分比例称取原料,再分别将基层、隔热层及防潮层的原料均匀混合。
2、将步骤(1)中每层的原料分别加入到挤出机的三个挤出装置1中,依次经挤出模头挤出、冷却套管4冷却、人字板5挤压后,各自形成单层薄膜。
3、步骤(2)中的各单层薄膜经牵引辊6牵引至对辊7处,再经对辊7加热、整合辊压,最后制备得到具有基层、隔热层及防潮层结构的调料袋原料薄膜。
上述生产方法需要使用一种挤出机,如图1所示,该挤出机包括三个挤出装置1,每个挤出装置1包括料箱2、螺旋送料管3和挤出模头,每个挤出模头的出料端接有冷却套管4,冷却套管4的内径大于或者等于膜管的直径,避免冷却套管4过小而阻碍膜管的形成。三个挤出装置1的挤出模头平行排列,使挤出的膜管能够平行。冷却套管4上方设有人字板5,用于将膜管压成平面状。人字板5的出料端接有牵引辊6,对形成平面后的薄膜进行牵引并再次辊压,避免薄膜中出现气泡而影响其性能。三组牵引辊6的正上方设有一组对辊7,对辊7内设有加热丝8。挤出机上还设有导向辊9和收料辊10。
具体使用时,将混合均匀的基层、隔热层及防潮层原料分别加入到三个挤出装置1的料想中,其中隔热层原料加入到中间的挤出装置1,使得防潮层作为外层、隔热层作为内层,防潮层在外侧优先进行防潮,避免水分与隔热层接触而对隔热层隔热性能造成影响。然后启动挤出机,挤出装置1将通过螺旋送料管3将原料送至挤出模头,挤出模头将其挤出,并使其形成膜管。通过冷却套管4对膜管进行冷却,使膜管快速成型。然后膜管在牵引力的作用下达到人字板5,由人字板5挤压成平面状形成单层薄膜,接着各单层薄膜在牵引辊6的作用下到达对辊7处。
启动加热丝8加热,在对辊7转动时将三层薄膜辊压整合,加热则能够使单层薄膜适当软化,提高对辊7辊压整合的效果,从而使三个单层薄膜经辊压后形成具有基层、隔热层及防潮层结构的调料袋原料薄膜。最后通过导向辊9将调料袋原料薄膜导入收料辊10处,由收料辊10进行收卷,完成整个生产。
以上所述的仅是本发明的实施例,方案中公知的具体结构及特性等常识在此未作过多描述。应当指出,对于本领域的技术人员来说,在不脱离本发明结构的前提下,还可以作出若干变形和改进。这些也应该视为本发明的保护范围,这些都不会影响本发明实施的效果和专利的实用性。本申请要求的保护范围应当以其权利要求的内容为准,说明书中的具体实施方式等记载可以用于解释权利要求的内容。
Claims (6)
1.调料袋原料薄膜,包括基层、隔热层与防潮层,基层上依次设置隔热层、防潮层,其特征在于:基层由以下重量份数的组分组成:聚丙烯15-23份、填充剂30-42份、抗菌剂5-10份、抗氧化剂2-5份以及防腐剂1-3份。
2.根据权利要求1所述的调料袋原料薄膜,其特征在于:所述填充剂为碳酸钙、二氧化硅、滑石粉中的至少一种。
3.根据权利要求2所述的调料袋原料薄膜,其特征在于:所述抗菌剂为香草醛类化合物、纳米氧化锌、银离子抗菌剂中的一种。
4.根据权利要求3所述的调料袋原料薄膜,其特征在于:所述抗氧化剂为二丁基羟基甲苯、丁基羟基茴香醚、叔丁基对苯二酚、没食子酸丙酯中的一种。
5.根据权利要求4所述的调料袋原料薄膜,其特征在于:所述防腐剂为苯甲酸类防腐剂、山梨酸类防腐剂、纳他霉素中的一种。
6.根据权利要求1至5任意一项所述的调料袋原料薄膜的生产方法,其特征在于:包括以下步骤:
(1)按照组分比例称取原料,再分别将基层、隔热层及防潮层的原料均匀混合;
(2)将步骤(1)中每层的原料分别加入到挤出机的三个挤出装置中,依次经挤出模头挤出、冷却套管冷却、人字板挤压后,各自形成单层薄膜;
(3)步骤(2)中的各单层薄膜经牵引辊牵引至对辊处,再经对辊加热、整合辊压,最后制备得到具有基层、隔热层及防潮层结构的调料袋原料薄膜。
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