Low-density polyethylene (LDPE)

详情

Low-density polyethylene (LDPE)
Description:
Polyethylene LDPE has a high degree of short and long chain branching. It is one of the most simplest and common polymer. It has, therefore, less trong intermolecular forces as the instantaneous-dipole inducted-dipole attraction is less. This results in a lower tensile strength and increased ductility. LDPE is created by free radical polymerization. The high degree of branching with long chains gives molten LDPE unique and desirable flow properties. LDPE is used for both rigid containers and plastic film applications such as plastic bags and film wrap.
 
Specifications

1. LDPE is principally used for making films. It is widely used in the production of 
   - agricultural film (mulching film and shed film), 
   - packaging film (for use in packing candies, vegetables and frozen food), 
   - blown film for packaging liquid (for use in packaging milk, soy sauce, juice, bean curds and soy milk), 
   - heavy-duty packaging bags, 
   - shrinkage packaging film, 
   - elastic film, 
   - lining film, 
   - buildinguse film, 
   - general-purpose industrial packaging film and food bags. 
2. LDPE is also widely used in the production of wire & cable insulation sheath. Cross-linked LDPE is the main material used in the insulation layer of high-voltage cables. 
   3. LDPE is also used in the production of injection-molded products (such as artificial flowers, medical instruments, medicine and food packaging material) and extrusion-molded tubes, plates, wire & cable coatings and profiled plastic products. 
   4. LDPE is also used for making blow-molded hollow products such as containers for holding food, medicine, cosmetics and chemical products, and tanks.