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塑料袋材質小知識

發布日期:2020-05-25 作者:www.dlqcwz.com 點擊:

  不論是垃圾袋、外賣包裝袋還是服飾包裝袋,我們基本每天都會用到塑料袋,那麽它的材質都有哪些呢?
  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質?
  What materials does plastic bag have?
  PE--聚乙烯
  PE -- Polyethylene
  聚乙烯(Polyethylene)簡稱PE,是乙烯進行加聚而成的高分子有機化合物。聚乙烯是世界上公認的接觸食品上佳材料,它無毒、無味、無臭,符合食品包裝衛生標準。而且聚乙烯薄膜,輕盈透明,具有防潮、抗氧、耐酸、耐堿、氣密性一般,熱封性優異等性能,是塑料包裝印刷用量較多、重要的材料,通常用來包裝糕點、糖果等食物還有日化用品等。
  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
  聚氯乙烯簡稱PVC,是乙烯基聚合物中主要的一類,是目前世界上僅次於聚乙烯的塑料品種。在國內的產量在塑料中則居前列,而且在印刷行業中,人們經常用聚氯乙烯製作書刊、文件夾、票證等封皮的包裝裝潢。
  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質?
  What materials does plastic bag have?
  Shrinkfilm--收縮薄膜
  Shrinkfilm -- shrink film
  收縮薄膜(Shrinkfilm),是一種在生產過程中被拉伸定向,在使用過程中受到熱空氣處理或紅外線照射便會收縮的熱塑性塑料薄膜。熱處理後,薄膜就緊裹在被包裝物上,收縮力在冷卻階段達到大值,並能長期保存,現在在食品包裝袋、飲料標簽、保鮮薄膜等方麵都會使用它作為原料。
  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.
濟南塑料袋
  LDPE--低密度聚乙烯
  LDPE -- low density polyethylene
  低密度聚乙烯,簡稱LDPE,是各國塑料包裝印刷工業中用量非常大的品種。因為它結晶度低(60%),會在壓力1000~3000kg/cm2進行本體聚合,故稱高壓聚乙烯。而且它壓延成型性差,適用吹塑法加工成管狀薄膜,通常適用於食品包裝、纖維製品包裝、日化用品包裝。
  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質?
  What materials does plastic bag have?
  HDPE--高密度聚乙烯
  HDPE -- high density polyethylene
  高密度聚乙烯,簡稱HDPE。它耐熱耐蒸煮,耐寒耐冷凍,而且防潮、防氣、隔絕性能好,不易破損,強度為LDPE的二倍。因此一些高品質的垃圾袋通常會用高密度聚乙烯材質製成,比如匠博士的收口型垃圾袋,不僅承重力強悍,還不易刺穿,哪怕是裝上了廚房的高溫湯水,也不易破損或是產生漏洞。
  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--雙向拉伸聚丙烯薄膜
  BOPP -- biaxially stretched polypropylene film
  雙軸向拉伸聚丙烯薄膜,也稱雙向拉伸聚丙烯薄膜,英文縮寫為BOPP,其機械強度、對折強度、氣密度、防潮阻隔性優於普通塑料薄膜。由於這種薄膜透明度很好,色彩再現格外光亮美觀,通常作為塑料複合軟包裝的重要基材,廣泛用於包裝紡織品、針棉品等服裝方麵。
  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.