プルタブ

ぷるたぶ
noun
pull tab (on a can)
tooldaily-life
1. pull tab; ring pull
The small metal tab you lift to open a drink can. Strictly the modern stay-on tab, though Japanese uses the word for the detachable rings of older cans as well.
Pull the tab to open it.
I can't get the pull tab open without breaking a nail.
At elementary schools, the drive to collect pull tabs to donate wheelchairs still goes on.

From English "pull tab." The maker's own term is (かん)(ぶた) or ステイオンタブ, but ordinary speech uses プルタブ for any drink-can opener tab.

Common collocations

Cultural note

Collecting プルタブ to trade for wheelchairs is a long-running school and workplace charity activity in Japan, familiar enough that the phrase プルタブ(あつ)め needs no explanation — even though recycling the whole can is now generally more effective.