Linear Low density polyethylene (LLDPE)
Linear Low density polyethylene (LLDPE): is the most common of the Roto polyethylene group and covers a wide range of grades from low to medium stiffness for numerous applications. Most grades used for Rotational moulding come under this category.
High Density Polyethylene (HDPE)
High Density Polyethylene (HDPE): is used for applications requiring higher rigidity, surface hardness, toughness, increased chemical resistance and ideal for large tanks or performance orientated products.
Cross Linked Polyethylene (XLPE)
Cross Linked Polyethylene (XLPE): Is a plastic material that strengthens considerably during the moulding process by crosslinking the plastic molecules. Some benefits of using XLPE for your products are enhanced impact resistance, ductile strength, improved Environmental Stress Crack Resistance (ESCR), higher abrasion and sustainability in cold temperatures.
Manufacturing of Polyethylene (PE)
During the manufacture of Polyethylene (PE) a variety of catalyst and co-monomers can be used which also have an effect on the properties of the PE.
Butene: Is the most common providing low cost, good mechanical properties and the most widely used.
Hexene: More grades have been available in the recent past providing a higher quality material with superior mechanical properties and ideal for products requiring improved mechanical properties than Butene grades.
Butene: Is the most common providing low cost, good mechanical properties and the most widely used.
Hexene: More grades have been available in the recent past providing a higher quality material with superior mechanical properties and ideal for products requiring improved mechanical properties than Butene grades.
Polypropylene (PP)
Polypropylene (PP): This material offers greater rigidity than polyethylene and has a higher heat distortion temperature.
It possesses excellent chemical and environmental stress crack resistance, however exhibits low impact strength at cold temperatures.
It possesses excellent chemical and environmental stress crack resistance, however exhibits low impact strength at cold temperatures.
Nylon (PA)
These materials offer full engineering material performance for rotational moulding applications. In the case of nylon 11 and 12 they are processed in the presence of air, without degradation of the polymer, in the case of nylon 6 an inert atmosphere has to be used (normally nitrogen) which makes processing more complex, although the lower material cost of this grade compensates for the difficulty in processing.
Polycarbonate (PC)
A very clear transparent material with high stiffness, in built flame retardancy, however a lower impact resistance that also requires high technical processing.
Plastomer
Flexible materials that have soft touch and rubber like qualities, are easy to process, excellent impact which can vary in the stiffness depending on grades. Ideal for road bollards, fenders and products requiring excellent impact strength.
Plasticised polyvinyl chloride (PVC)
Plasticised polyvinyl chloride (PVC): available in a liquid form, (plastisol). PVC has excellent weathering and ageing characteristics and is highly resistant to certain chemicals.
Flexibility, impact and temperature performances differ according to grade. Because of their elastomeric qualities, the softer grades of PVC are commonly employed where rubber like qualities are required.
Flexibility, impact and temperature performances differ according to grade. Because of their elastomeric qualities, the softer grades of PVC are commonly employed where rubber like qualities are required.
Polyvinylidene fluoride (PVDF)
Polyvinylidene fluoride (PVDF): On top of the list regarding high chemical resistance, outstanding environmental stress crack resistance, inherently flame retardant, excellent impact and heat resistance. Used when other materials cannot perform for the application due to the mechanical properties.