聯係我們

聯係人:張經理

電  話:15562532333

0531-88606457

郵  箱:liulinyu2006@126.com

地  址:濟南市曆城區唐王開發區

行業動態

您的當前位置: 首 頁 >> 新聞中心 > 行業動態 >

食品袋與普通塑料袋有什麽區別?

發布日期:2020-04-14 作者:www.dlqcwz.com 點擊:

  常見的食品包裝材料有聚乙烯、聚丙烯、聚苯乙烯等。不同的材料有不同的特點,使用時應根據食物本身的特點來選擇。
  Common food packaging materials include polyethylene, polypropylene, polystyrene, etc. Different materials have different characteristics, which should be selected according to the characteristics of the food itself.
  (一)PE聚乙烯:主要成份為聚乙烯樹脂,加入少量潤滑劑、抗老化劑等添加劑。聚乙烯沒有氣味,無毒,外露在乳白色的蠟狀固體中。聚乙烯按聚合方法、分子量和鏈結構分為高密度聚乙烯、低密度聚乙烯和線性低密度聚乙烯。
  (1) PE polyethylene: the main component is polyethylene resin, adding a small amount of lubricant, anti-aging agent and other additives. Polyethylene is odorless, nontoxic, and exposed to a milky white waxy solid. According to polymerization method, molecular weight and chain structure, polyethylene can be divided into high-density polyethylene, low-density polyethylene and linear low-density polyethylene.
  低密度聚乙烯:俗稱高壓聚乙烯,由於密度低,材料是更軟的,主要用於塑料袋、食品、服裝、醫藥、化肥、工業產品包裝材料和農用薄膜。
  Low density polyethylene: commonly known as high-pressure polyethylene, because of its low density, the material is the softest, mainly used for plastic bags, food, clothing, medicine, fertilizer, industrial product packaging materials and agricultural film.
  高密度聚乙烯,俗稱低壓聚乙烯,與LDPE和LLDPE相比,具有較高的耐熱性,耐油性,蒸汽滲透性和耐環境應力開裂性能,電氣絕緣和耐衝擊和耐冷性能很好,主要應用於空心產品的生產(如牛奶瓶、洗滌劑瓶)和吹塑、注塑、等領域。
  High density polyethylene, commonly known as low-pressure polyethylene, has higher heat resistance, oil resistance, steam permeability and environmental stress cracking resistance compared with LDPE and LLDPE. Its electrical insulation, impact resistance and cold resistance are very good. It is mainly used in the production of hollow products (such as milk bottles, detergent bottles), blow molding, injection molding and other fields.
  線性低密度聚乙烯(ldpe)是乙烯與少量高烯烴在催化劑存在下的共聚物。LLDPE與LDPE外觀相似,透明度差,但表麵光澤度好。具有低溫韌性、高模量、抗彎、抗應力開裂、低溫衝擊強度好等優點。
  Linear low density polyethylene (LDPE) is a copolymer of ethylene and a small amount of high olefins in the presence of catalyst. LLDPE and LDPE have similar appearance, poor transparency, but good surface gloss. It has the advantages of low temperature toughness, high modulus, bending resistance, stress cracking resistance, and low temperature impact strength.
  主要用於生產薄膜、日用品、管材、電線電纜的注塑、擠出、吹塑等成型方法。
  Mainly used in the production of film, commodity, pipe, wire and cable injection, extrusion, blow molding and other molding methods.
  (2)聚丙烯:主要成分是聚丙烯樹脂,高光澤,透明度高,熱封性比聚乙烯差,但比其他塑料材料好。
  (2) Polypropylene: the main component is polypropylene resin, high gloss, high transparency, poor heat sealing performance than polyethylene, but better than other plastic materials.
  1. 阻隔性能優於PE,強度、硬度、剛性高於PE;
  1. The barrier performance is better than PE, and the strength, hardness and rigidity are higher than PE;
  2. 健康安全高於體育
  2. Health and safety are higher than sports
  3.優異的耐高溫性能,可在100~200℃的溫度下長期使用,但耐低溫性能比PE差,當達到-17℃時性能變脆。
  3. Excellent high temperature resistance, which can be used for a long time at the temperature of 100 ~ 200 ℃, but its low temperature resistance is worse than that of PE, and it becomes brittle when it reaches - 17 ℃.
  聚丙烯主要由薄膜材料製成的食品包裝袋,耐水性、防潮性比PT好,材料透明,耐撕裂,但印刷性比PT差,成本低,可用於糖果、零食的扭結包裝。也可製成熱縮膜,用於食品熱縮包裝,如食品真空包裝袋等複合包裝袋。
  Polypropylene is mainly made of film material for food packaging. Its water resistance and moisture resistance are better than Pt. Its material is transparent and tear resistant, but its printability is worse than Pt and its cost is lower. It can be used for kinking packaging of candy and snacks. It can also be made into heat shrinkable film and used in food heat shrinkable packaging, such as food vacuum packaging bag and other composite packaging bags.
濟南塑料袋
  (3)聚苯乙烯:以苯乙烯單體為主要成分的聚合物。材料透明,光澤好。
  (3) Polystyrene: polymer with styrene monomer as main component. The material is transparent and glossy.
  1. 耐濕性比聚乙烯差,化學穩定性一般,硬度高,但脆性大。
  1. The resistance to humidity is worse than that of polyethylene, the chemical stability is general, the hardness is high, but the brittleness is large.
  2. 耐低溫性好,耐高溫性差,不高於60~80℃。
  2. Good low temperature resistance, poor high temperature resistance, no higher than 60 ~ 80 ℃.
  3.良好的安全係數。
  3. Good safety factor.
  主要由食品盒、水果盤、餐具、冷飲杯等組成。
  It mainly consists of food box, fruit plate, tableware, cold drink cup, etc.
  除了常見的食品包裝材料PE、PE、PS、PP聚丙烯聚苯乙烯、三聚氰胺等不同類型的塑料複合膜、多層,如複合薄膜複合材料製成的複合袋、等,這些材料根據不同的特點和不同的處理技術可以產生不同類型的包,如大米自立拉鏈袋、真空袋、狗糧等調味品塑料袋,袋泡茶。
  In addition to the common food packaging materials such as PE, PE, PS, PP, PP, polystyrene, melamine and other different types of plastic composite films, multilayer, such as composite bags made of composite film composite materials, etc., these materials can produce different types of bags according to different characteristics and different processing technologies, such as rice self-supporting zipper bags, vacuum bags, dog food and other condiment plastic bags, tea bags.
  彩色塑料袋一般是用在製造著色劑的過程中,著色劑通常含有苯並芘,苯並芘是一種多環芳烴,多環芳烴會對人體健康造成很多危害。
  Color plastic bags are generally used in the process of making colorants. The colorants usually contain benzopyrene, which is a kind of polycyclic aromatic hydrocarbon, which will cause a lot of harm to human health.