> They also found that when they made a cup out of the stuff and filled it with water heated almost to boiling point, the cup remained intact for more than two hours. Though this is not as long as a plastic cup would last (it would survive indefinitely) it is long enough for all practical purposes.
Err, no. A disposable cup that leaks after 2 hours is a horrible product. Disposable cups are at their most useful in the car, and it’s easy for a bit of coffee to be left in a cup for more than a couple of hours.
Err, no. A disposable cup that leaks after 2 hours is a horrible product. Disposable cups are at their most useful in the car, and it’s easy for a bit of coffee to be left in a cup for more than a couple of hours.