A novel one-step process that combines thermoplastics and reaction injection molded polyurethane in a two-cavity tool was demonstrated in a live operation for the first time outside Europe at NPE2012 in Orlando, FL last week.
KraussMaffei demonstrated its SkinForm process (called DirectSkinning by Bayer MaterialScience) on a CX 200-1400 hybrid injection molding machine coupled with a RimStar hybrid mixing and metering system for the polyurethane. That pairing targets automotive applications. When paired with the KraussMaffei all-electric
EX Series, the process targets medical applications requiring cost-effective production of a soft, chemical resistant surface on a stiff substrate, such as polycarbonate.
Eliminates painting
The ultra-low volatile organic compound process eliminates painting and the associated overspray common to traditional in-mold painting. It targets applications ranging from high-end cases for electronic devices to arm rests for seating.
“We’re bringing this technology to market as a turnkey solution,” said Ignacio Osio, demand creation manager, Bayer MaterialScience. “Because we are offering a complete solution – materials, molds, molding equipment and expertise – OEMs in North America can feel confident integrating this process into their manufacturing operations.”
Paul Caprio, managing director of the American unit of KraussMaffei, told Plastics Today in an interview at NPE2012 that KraussMaffei is using a 50,000 square foot facility adjacent to Proper Group International’s headquarters in Warren, MI to assemble and test systems for the process, as well as other systems.
“Our strategic relationships with Bayer MaterialScience LLC and Proper Group International in North America provide a strong platform for rolling out the technology to this market,” said Caprio. KraussMaffei and Proper formed a strategic partnership to operate as system partners for injection molding technology and
polyurethane technology in the US market, providing turnkey systems.
Soft-touch system
At the NPE, a new, foamed aliphatic polyurethane system was used that combines excellent UV resistance and soft-touch properties. The CX Hybrid injection molding machine combined the advantages of the hydraulic and electric machine design for a broad range of applications.
Combined with the electrically driven injection units of the EX series, the machines offers high power density at low energy consumption with parallel movements and injection speeds of up to 300 mm/s.
Source : plasticstoday.com
