Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:

iF SOCIAL IMPACT PRIZE (free of charge)

Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Cap with time / PET Bottle Cap

Cap with time

When we use a bottle to drink, we sometime forget how long the cintent has been exposed to air. The amount of germs grow more and more quickly with the time passing.
This design can easily give a visual to users about how long the bottle has been opened.
After the bottle being opened, the color on the cap begane to turn red because of the air contact. The longer time passes, the more extended color it may appear on the cap.


Tatung University, Taipei

Tatung University
Taipei, Taiwan

Go to profile

Tatung University, Taipei

Tatung University
Taipei, Taiwan


Go to profile