Lightweight bus components are produced using foam resin and vacuum expansion processes

For public transport companies, they need to transport passengers to their destinations comfortably and safely, while keeping operating costs associated with fuel consumption and maintenance as low as possible.has extensive experience in manufacturing high-quality passenger cars with a modern look. Recently, the company launched a new Citea series of buses using lightweight composite components made from a foam resin formula.。 This foam resin formula is produced and made available by Büfa Composite Systems ("Büfa") using Aliancys resins.addition to their unique form factor and great aerodynamics, these low-density composite components reduce the body weight of the bus, reducing fuel consumption and emissions.VDL has a good experience in applying composite materials to bus cars. However, for its new Citea bus, the company wants to do its best to reduce weight and increase the productivity of this medium-yielding car.the company has been actively looking for composite technology that combines design flexibility, mechanical strength and lightweighting.forming company, OMB Composites (Psáry, Czech Republic), manufactures several composite components for VDL in a vacuum expansion process (VEX technology) using a specially made resin blend from Büfa.first open the mold, coat the surface of the mold cavity with a coat, and then apply the reinforcing material and resin. When the mold is closed, the resin starts foaming and fills the cavity.the design of the components and the performance requirements of the final application, this foam resin vacuum expansion process (VEX technology) allows the manufacture of large components up to 2m×6m.can be reduced by up to 45% compared to components made with conventional resin technology.the use of this technology, each component has a molding cycle time of only 3 hours, compared with a much longer production time using hand paste technology.this new technology makes the surface of the component very smooth, allowing the application of a surface coating for perfect A-grade surface results.the use of the Büfa-Firestop foam resin system, fire protection and smoke-blocking performance can also be raised to the typical level required by the rail vehicle industry.the development of this particular foam resin mixture, Büfa worked closely with Aliancys to fine-tune the composition and curing time of the resin." Aliancys has extensive experience in developing new resins with unique chemical properties and other properties. Together, we have optimized the resin system to deliver the right performance for the final product. "We know that the high quality consistency of Aliancys resins helps ensure that our customers' processes are stable and predictable, so that their component production processes are very reliable.specific requirements for this application, Aliancys has custom-made a special phthalates resin for the production of this foam resin mixture.
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