Extrusion

Friction induced noise in automotive door seals is mitigated with highly durable water-based coatings having a low coefficient of friction.

A design of experiments (DOE) on two EPDM rubber extrusion compounds identifies to what degree properties are influenced by mixing drop temperature, milling time and mill temperature.

Principal methods for processing elastomeric materials are reviewed, including continuous extrusion and what is described as multi-step extrusion.

High dyne EPDM compounds offer an exceptional high surface energy level with a minimum of 58 dynes/cm, which is higher than all known rubbers, and at least twice as high as that of a typical EPDM compound.

EPDM has not been immune to significant price increases, material shortages and allocations. As extrusion expenses are dominated by material cost and throughput, price and efficiency are of the essence. One of the most common ways to improve cost efficiencies in extrusion compounds is to lower material cost by extending the polymer as much as possible using high amounts of filler, for which EPDM is perfectly suited. The other option to decrease costs is to run more product in the same amount of time, requiring a material with higher extrusion rates.

components. In the medical technology, automotive and food industries, silicone rubbers are often used as media carrying components in the form of hoses or profiles. All applications have in common that high demands are placed on the material, as well as on the geometric dimensions, and thus on the manufacturing process.