Materials

HDPE (high density polyethylene)

HDPE (high density polyethylene) is a rigid plastic used for products with a short shelf life. It also has good chemical resistance and is used for many chemicals. Colored bottles are stronger than non-colored.

Properties

Resistance to chemicals and moisture, ease of processing and forming, strength

Applications

Dairy products, juice, shampoo, detergents

LDPE (low density polyethylene)

LDPE (low density polyethylene) is mostly used in film applications where heat sealing is necessary. It is also sometimes used for bottles.

Properties

Ease of sealing, barrier to moisture, flexibility

Applications

Squeezable bottles like honey and mustard, dry cleaning, bread and frozen food bags

Process

HDPE & LDPE bottles are usually made using Extrusion blow molding and injection blow molding