Another surprising report

The event:
In order to dry up a futon on a veranda, a housewife opened two (2)
of slide doors and stacked the doors.
As the futon has dried up, she took it from the veranda and tied to
close the slide doors but she could not make it.


front view
side view		 If two (2) slide doors are
stacked,the spare between
the two (2) forms a layered
glass effect.

It was observed that the air in the space between
the two (2) stacked slide doors pushed the temperature
up to 50 to 60 degrees C, which caused to bend the sash.

As the center of two (2) sashes is heated up,
it causes to expanded glasses and bends them toward inside.
Since each of the sash bends to inside, sashes touch each other
and prevent them from moving.

If the temperature of the center space of the two (2)
sashes is lowered or if the external temperature becomes lower,
it turn to be in normal shape.

“No one has ever thought of such incidence.”

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