Friday 6 July 2012

New Touchscreens Driving Change in Plastic Injection Molding

By Keith Klamer


Say goodbye to knobs and switches and say hello to touchscreens, a'la smartphones, coming soon to a car near you.

This development could be a game-changer for the plastic injection molding industry. How so? Many of the parts that go into the new touchscreens, and the consoles which include them, will contain plastic injection molded parts. Trade show exhibits which showcase the new technology are impressing crowds the world over. Manufacturers say the new touchscreens will begin appearing in dashboards over the next few years. The new technology will ultimately replace almost every knob and switch in the car -- in the same way the iPhone touchpad replaced the QWERTY keyboard in phones.

The revolutionary new touchscreens are a bonanza for both the automotive industry and those who make plastic injection molded parts, many of who already manufacture plastic car parts for engines and passenger areas -- everything from shifter knobs to interior bezels.

A Duo 350 injection molding machine was featured in one plastics show exhibit. Employing spin-stack technology, the thermoplastic center console top carrier, comprised of ABS-PC, is injected as the pre-molded part made in the previous cycle is overmolded with polyurethane in the mold's second half.

This process is based on a standard plastic injection molding method but with a polyurethane set-up connected to the mold, instead of a second injection unit. The capacitive foil is insert-placed into the mold before injecting the first component.

Defined as a "clearmelt" process, the chief job of the polyurethane is protection of the part's class A topside against standard car interior threats such as bubble gum and soda pop. Not long ago, an announcement was made that the new touchscreen technology will first start showing up in the sun roof's touchscreen.

What formerly was the home of iron and steel, the modern automobile is now every bit as hospitable to parts made of injection molded plastic, a development which now seems to have reached critical mass.




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2 comments:

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