食品保鲜膜性能分析与正确选用

范文编号:BZ017  范文字数:24745.页数:42

摘要：由于食品包装中有害物质残留过高，食品因此被污染而引起中毒的事件频频发生，给创建和谐社会带来诸多不利因素。
 保鲜膜在家庭中逐渐普及，质优的保鲜膜不仅可以防止冰箱中各种菜肴串味、保持菜肴的新鲜度，同时在锁住美食营养上也有独到的一面。保鲜膜通常为聚乙烯膜，也称 PE保鲜膜。不同厂家生产的保鲜膜因生产工艺的区别、质量控制的不同而导致产品质量参差不齐。
 本文从实验的角度，先对食品保鲜膜能参数做个系统的了解，然后根据器材做相关实验，着重研究了拉伸试验。在了解到国标以后进行对比，不仅检验该试样是否符合相关标准，而且对食品保鲜膜做个更彻底的了解和认识，为接下来更好的选用保鲜膜打好基础。
 结合生活经验，把一些正确选用食品保鲜膜的方法和窍门介绍给大家，为大家生活中带来便利。
 
 
关键词：和谐社会、食品保鲜膜、性能检测、正确选用

Abstract：As a lot of harmful substances in food packaging residues are so high that food was contaminated and caused by frequently occurrence of poisoning, which do harm for creating a harmonious society in many negative factors.     Food wrapping paper plays a more and more important role in the general family. Preservation of high quality films can not only prevent a varise of dishes in the refrigerator remix to maintain the freshness of food, nutritional food at the same time lock on the one hand there are unique. Usually wrap polyethylene film, also known as PE cling film. Produced by different manufacturers wrap due to the difference between production processes, quality control of product quality caused by different variable.     This article from the experimental point of view, the first food wrap can be a system understanding of the parameters, and then in accordance with the relevant equipment to do experiments, focusing on the tensile test. In the GB after that comparison, not only to examine the specimen with the relevant standards, but also to wrap food to be a more thorough understanding and knowledge, a better choice for the next wrap and lay a good foundation.
 I introduce some correct way to choose the wrap food and know-how to use it combinating of life experience, in order to facilitate the life of everyone.   
Keywords: Harmonious society、food wrapping paper、performance testing、 selection

目录
中文摘要......................................................... II
ABSTRACT......................................................... III
目录.............................................................IV
第一章 绪论........................................................1
 1.1选题背景....................................................1
 1.2选题意义....................................................3
 1.3调查现状...............................................4
 1.4本文研究的主要内容和方法....................................8
第二章 食品保鲜膜主要性能参数......................................9
 2.1拉伸强度和断裂伸长率........................................9
 2.2直角撕裂强度...............................................11
 2.3自粘性....................................................12
 2.4气体透过率.................................................14
 2.5水蒸气透过量...............................................16
 2.6厚度......................................................17
 2.7透光率和雾度...............................................17
第三章 食品保鲜膜性能检测对比与分析................................19
 3.1拉伸强度和断裂伸长率的检测对比和分析.......................19
 3.2直角撕裂强度的检测对比....................................23
 3.3自粘性的检测对比和分析....................................24
 3.4气体透过率的检测对比......................................25
 3.5水蒸气透过量的检测对比和标准...............................26
 3.6厚度的检测................................................27
 3.7透光率和雾度的检测.........................................28
 3.8检测数据报告..............................................29
 3.9综合分析..............................................29
第四章 食品保鲜膜的正确选用........................................30
 4.1保鲜膜在生活中的作用.......................................30
 4.2保鲜膜分类.................................................30
 4.3选用的标准.................................................32
 4.4问卷调查...................................................33
 4.5保鲜膜行业的展望...........................................35
结论...............................................................37
参考文献...........................................................38
致谢...............................................................39

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