The Difference Between Rotomolding PE Material And PP Material

Ingredients and Properties

‌PE material (polyethylene)‌: The main component of PE material is polyethylene, which is a thermoplastic resin that is odorless, non-toxic and feels like wax. It has good low temperature resistance, the lowest operating temperature can reach -100~-70°C, has good chemical stability, and can resist the erosion of most acids and alkalis, but is not resistant to acids with oxidizing properties. PE material is insoluble in general solvents at room temperature, has low water absorption and excellent electrical insulation properties.

‌PP material (polypropylene)‌: The main component of PP material is polypropylene, an odorless, tasteless, non-toxic milky white granular or powdery product. It has good mechanical properties, heat resistance and electrical insulation properties, good chemical stability, and does not interact with most chemicals. PP material has higher heat resistance than PE material, can withstand higher temperatures, and is not easy to soften, deform or break.

Processing performance

‌PE material‌: PE material has excellent chemical stability, but is not resistant to strong oxidants such as fuming sulfuric acid, concentrated nitric acid, etc. It has good fluidity, low processing temperature, moderate viscosity and low decomposition temperature. It is a plastic with good processing performance. PE materials are easy to shape during processing and are suitable for blow molding, extrusion, injection molding and other methods. They are widely used in the manufacture of films, hollow products, fibers and daily sundries.

‌PP material‌: PP material has good fluidity at high temperatures and can maintain stable size and shape after cooling, so it has good formability and plasticity. PP material is also easy to shape during processing and is suitable for making greenhouse air awnings, mulch films, culture bottles, agricultural tools, fish nets, etc.

Application scope

‌PE material‌: PE material is widely used in packaging materials, containers, pipes, monofilaments, wires and cables and other fields because of its light and transparent, moisture-proof, oxygen-resistant, acid-resistant, alkali-resistant and other properties. It is also commonly used in the manufacture of films and daily necessities, such as plastic bags, food packaging films, etc.

‌PP material‌: PP material is often used to make food turnover boxes, food bags, beverage packaging bottles, etc. due to its excellent mechanical properties and heat resistance. It is also used to make agricultural supplies such as greenhouse awnings, mulch films, and culture bottles.