What does the Japanese symbol, プラ with the revolving arrows mean?

Question

It appears on Japanese packaging sometimes along with another symbol with arrows.

Answer 1

You'll also often see some other writing underneath the symbol - this indicates the type of plastic. Some examples:

PE = polyethylene/polythene
PP = polypropylene
PET = polyethylene teraphthalate - plastic often used for carbonated drinks.

Answer 2

It's short of "プラスティック" (Plastic)

And the resvolving arrows mean "can be recycled"

http://ja.wikipedia.org/wiki/%E3%83%AA%E3%82%B5%E3%82%A4%E3%82%AF%E3%83%AB%E3%83%9E%E3%83%BC%E3%82%AF

Answer 3

plastic