This computer-controlled liquid polyurethane dispenser by Max Machinery (Healdsburg, CA) can produce exactly the same polyurethane mix for each shot. Polyurethanes are used often in medical device ...

If you’ve ever sat on a sofa, lounged in a recliner, or taken a seat on a bus, you’ve probably already interacted with polyurethane. It’s fair to say that nearly every mattress, pillow, cushion, pad, ...

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