LWB Steinl GmbH & Co.KG and Evonik Industries combine their experience to produce rotationally symmetrical plastic/rubber composite components: Evonik supplies polyamide 612 VESTAMID® DX9325, no adhesive, and EPDM Rubber Adhesive. LWB Steinl offers expertise in two-component injection molding. Its automated manufacturing process can be visited at the German Rubber Conference LWB Steinl booth 309 from July 2nd to 5th.
Where rubber parts must be permanently fixed or installed, composites of hard parts and elastomers prove their worth. In order to reduce weight, traditionally made hard parts made of metal have been replaced by suitable plastics. They have two other advantages: they do not corrode; they can effectively form complex molded parts during the injection molding process, which gives designers more flexibility in designing complex components. The combination of soft and hard components is composite energy. The decisive criterion for long-term function, which is usually achieved by adhesives. Adhesives need to be protected against environmental emissions. It is also necessary to treat the adhesive in an environmentally friendly manner.
Evonik has developed a variety of plastic compounds that make the use of adhesives redundant. The components that make up the component form a tight and durable bond with the appropriate rubber compound, without the need for pretreatment or the use of adhesives or binders. VESTAMID® DX9325 is a 40% glass fiber reinforced polyamide 612 compound specially developed for plastics and rubber compounding technology. It can also be co-vulcanized with EPDM. Semi-crystalline VESTAMID® DX9325 is relatively fuel-like, Oil and fat, with good chemical resistance
EPDM rubber composite parts can be produced in one step, mostly for automated processes, similar to two-component injection molding in one tool, eliminating the need for multiple processing of components, avoiding mistakes and reducing scrap rates. , depending on plant-specific conditions, can save up to 30% of the cost.
At Evonik's booth #107 in Hall 12, you can learn more about the patented plastic/rubber bonding process, the PA612, PPA and PPE molding compounds developed specifically for this process, and their need for adhesives. , relative to SBR, NR/SBR, NBR/SBR, NBR, XNBR, HNBR, AEM and FPM adhesive information.