OSU researchers develop shampoo bottle that empties completely

Laundry detergent flows off a piece of treated polycarbonate in a steady stream. Engineers at The Ohio State University have invented a coating that lets soap flow out of plastic bottles more easily. Image from video by Philip S. Brown, courtesy of The Ohio State University.


COLUMBUS (WCMH) – Ohio State researchers have come up with a way to help you get that last bit of shampoo out of the bottle.

Nanotech researchers at OSU say it’s all in the way the bottles are lined.

They say if companies at little heart shaped ‘speed bumps’ inside the bottles, the liquid won’t get stuck at the bottom. Instead, the soap will sit above tiny air pockets, never actually touching the inside of the bottle.

The researchers engineered a solvent to apply to the plastic that creates the texture inside the bottle.

The scientists say they’re not just solving a first-world problem. They believe it could help stop waste and push recycling.

“It’s what you’d call a first-world problem, right? ‘I can’t get all of the shampoo to come out of the bottle.’ But manufacturers are really interested in this, because they make billions of bottles that end up in the garbage with product still in them,” said Bhushan, Ohio Eminent Scholar and Howard D. Winbigler Professor of mechanical engineering at Ohio State.

OSU hopes to license the coating technique to manufacturers of shampoo bottles and other plastics that require a similar resistance to liquids

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