Polyethylene (PE) Waterjet Cutting CNC Routing – Custom Parts

Polyethylene (PE) is one of the most widely used and versatile thermoplastic polymers, produced from the polymerization of ethylene gas, which is derived from petroleum or natural gas. The manufacturing process involves either high-pressure or low-pressure polymerization, depending on the desired properties of the final product. High-density polyethylene (HDPE) is produced under high pressure and is known for its strength and rigidity, while low-density polyethylene (LDPE) is produced under low pressure and is more flexible. There are also other variations such as linear low-density polyethylene (LLDPE), which combines properties of both HDPE and LDPE. Polyethylene is used in a wide range of applications, including packaging materials (such as plastic bags, bottles, and films), piping systems, insulation for wires and cables, toys, medical products, and automotive components.

The advantages of polyethylene include its excellent chemical resistance, low moisture absorption, and high durability, making it ideal for use in environments where corrosion, chemicals, or moisture exposure are concerns. It is lightweight, relatively low-cost, and easy to process, with multiple manufacturing methods available, including injection molding, blow molding, and extrusion. Additionally, polyethylene is non-toxic, making it safe for use in food packaging and medical products. However, polyethylene also has some disadvantages: it has poor UV resistance, and prolonged exposure to sunlight can cause it to degrade, leading to brittleness or discoloration unless it is stabilized with UV inhibitors. Furthermore, while polyethylene is recyclable, it is often difficult to recycle due to contamination, and it can take hundreds of years to decompose in landfills, raising environmental concerns. Despite these issues, polyethylene remains a popular and widely used material due to its versatility, durability, and cost-effectiveness.