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塑料袋材质小知识

发布日期:2020-05-25 作者:bob体育app官方网站 点击:

  不论是垃圾袋、外卖包装袋还是服饰包装袋,我们基本每天都会用到塑料袋,那么它的材质都有哪些呢?
  Whether it's garbage bags, take out bags or clothing bags, we use plastic bags every day, so what are their materials?
  塑料袋小科普它都有哪些材质?
  What materials does plastic bag have?
  PE--聚乙烯
  PE -- Polyethylene
  聚乙烯(Polyethylene)简称PE,是乙烯进行加聚而成的高分子有机化合物。聚乙烯是世界上公认的接触食品上佳材料,它无毒、无味、无臭,符合食品包装卫生标准。而且聚乙烯薄膜,轻盈透明,具有防潮、抗氧、耐酸、耐碱、气密性一般,热封性优异等性能,是塑料包装印刷用量较多、重要的材料,通常用来包装糕点、糖果等食物还有日化用品等。
  Polyethylene (PE) is a kind of high molecular organic compound, which is produced by adding ethylene. Polyethylene is recognized as the best material in contact with food in the world. It is nontoxic, tasteless and odorless, and conforms to the hygienic standard of food packaging. And polyethylene film, light and transparent, with moisture-proof, oxygen resistance, acid resistance, alkali resistance, general air tightness, excellent heat sealing and other properties, is an important material with a large amount of plastic packaging and printing, usually used for packaging pastry, candy and other food as well as daily chemical products.
  PVC--聚氯乙烯
  PVC -- Polyvinyl Chloride
  聚氯乙烯简称PVC,是乙烯基聚合物中主要的一类,是目前世界上仅次于聚乙烯的塑料品种。在国内的产量在塑料中则居前列,而且在印刷行业中,人们经常用聚氯乙烯制作书刊、文件夹、票证等封皮的包装装潢。
  PVC, the abbreviation of PVC, is the main type of vinyl polymer, which is the second only to polyethylene in the world. In China, the output is in the forefront of plastics, and in the printing industry, people often use PVC to make the packaging and decoration of books, folders, tickets and other covers.
  塑料袋小科普它都有哪些材质?
  What materials does plastic bag have?
  Shrinkfilm--收缩薄膜
  Shrinkfilm -- shrink film
  收缩薄膜(Shrinkfilm),是一种在生产过程中被拉伸定向,在使用过程中受到热空气处理或红外线照射便会收缩的热塑性塑料薄膜。热处理后,薄膜就紧裹在被包装物上,收缩力在冷却阶段达到大值,并能长期保存,现在在食品包装袋、饮料标签、保鲜薄膜等方面都会使用它作为原料。
  Shrinkfilm is a kind of thermoplastic film which is stretched and oriented in the production process and shrinks when it is exposed to heat air treatment or infrared radiation in the use process. After heat treatment, the film is tightly wrapped on the package. The shrinkage force reaches a large value in the cooling stage and can be preserved for a long time. Now it is used as raw materials in food packaging bags, beverage labels, fresh-keeping films and other aspects.
济南塑料袋
  LDPE--低密度聚乙烯
  LDPE -- low density polyethylene
  低密度聚乙烯,简称LDPE,是各国塑料包装印刷工业中用量非常大的品种。因为它结晶度低(60%),会在压力1000~3000kg/cm2进行本体聚合,故称高压聚乙烯。而且它压延成型性差,适用吹塑法加工成管状薄膜,通常适用于食品包装、纤维制品包装、日化用品包装。
  Low density polyethylene, or LDPE for short, is one of the most widely used plastic packaging and printing industries in the world. Because of its low crystallinity (60%), it will polymerize in bulk at a pressure of 1000-3000kg / cm2, so it is called high-pressure polyethylene. Moreover, it has poor calendering formability and can be processed into tubular film by blow molding. It is usually suitable for food packaging, fiber products packaging and daily chemical products packaging.
  塑料袋小科普它都有哪些材质?
  What materials does plastic bag have?
  HDPE--高密度聚乙烯
  HDPE -- high density polyethylene
  高密度聚乙烯,简称HDPE。它耐热耐蒸煮,耐寒耐冷冻,而且防潮、防气、隔绝性能好,不易破损,强度为LDPE的二倍。因此一些高品质的垃圾袋通常会用高密度聚乙烯材质制成,比如匠博士的收口型垃圾袋,不仅承重力强悍,还不易刺穿,哪怕是装上了厨房的高温汤水,也不易破损或是产生漏洞。
  HDPE for short. It is resistant to heat, cooking, cold, freezing, moisture, gas and insulation, and is not easy to be damaged. Its strength is twice that of LDPE. Therefore, some high-quality garbage bags are usually made of high-density polyethylene materials, such as Dr. Smith's closed garbage bag, which is not only strong in bearing capacity, but also not easy to pierce. Even if it is filled with high-temperature soup in the kitchen, it is not easy to damage or create holes.
  BOPP--双向拉伸聚丙烯薄膜
  BOPP -- biaxially stretched polypropylene film
  双轴向拉伸聚丙烯薄膜,也称双向拉伸聚丙烯薄膜,英文缩写为BOPP,其机械强度、对折强度、气密度、防潮阻隔性优于普通塑料薄膜。由于这种薄膜透明度很好,色彩再现格外光亮美观,通常作为塑料复合软包装的重要基材,广泛用于包装纺织品、针棉品等服装方面。
  Biaxially stretched polypropylene film, also known as biaxially stretched polypropylene film, abbreviated as BOPP, has better mechanical strength, folding strength, air tightness and moisture resistance than ordinary plastic film. Because of its good transparency and bright and beautiful color reproduction, the film is usually used as an important base material for plastic composite soft packaging, widely used in packaging textiles, cotton and other clothing.