タイトルまたは説明

High density polyethylene usually use Ziegler-Natta polymerization manufacturing, its characteristic is the molecular chain not up the chain, so the molecular chain arrangement of neat, has the high density. This process in tubular or kettle type low pressure in the reactor to ethylene as raw material and using the oxygen or organic peroxide for initiating polymerization initiator. High density of environmental protection material), heating reaches melting point, can be reused. Notice of plastic raw materials can is divided into two categories: "Thermoplastic plastic" (Thermoplastic) and "Thermosetting plastic" (Thermosetting), "Thermosetting plastic" is heated to a definite temperature became solidified state, even though continue to heating can't change their state, and therefore, it is environmental protection product is "Thermosetting plastic" products (such as tyre), is not "Thermoplastic plastic" products (such as plastic pallet note: stack board in Hong Kong and Macao are called "flush"), so not all "plastic" are not environmental protection.
â–² blow molding: sales in the United States of HDPE1/3 above for blow molding purposes. These range from with bleach, oil, detergent, milk and distilled water bottle to large refrigerators, automobile fuel tank and tube cans. Blow the quality characteristic parameters, such as melt strength, ES-CR and toughness, and used for sheet material and thermal molding application level similar, so one can use similar. Injection molding-used to make smaller containers (less than *6 oz), for packaging of drugs, shampoo and cosmetics. This process is one of the advantages to bottle production automatic edge horn, do not need as the common molding process that's later nap steps. Although there are some narrow grade MWD used to improve surface finish, general use of MWD wide wide to grade.