Naked Science Forum

General Science => General Science => Topic started by: HealthTeacher on 20/01/2017 16:27:49

Title: How long will Sticky Notes stay sticky?
Post by: HealthTeacher on 20/01/2017 16:27:49
Once pealed from the note pad, how long will sticky notes stay sticky?  What causes them to loose their "stickyness" if they do?

Title: Re: How long will Sticky Notes stay sticky?
Post by: evan_au on 20/01/2017 21:45:52
They can stay sticky in the pad for years.

Once peeled from the pad, they stick to all sorts of dirt, dust and skin oils.
Only a small area of glue remains exposed - and that can't make good contact because of the thickness of dust and hairs etc that is already coating the sticky surface.
Title: Re: How long will Sticky Notes stay sticky?
Post by: ohlala on 30/01/2017 12:32:36
It depends on the environment the sticky note is in once it's been peeled from the pad. If there's a lot of dust then it won't stay sticky for long. The more you stick and un-stick it from surfaces, the less sticky they will become eventually
Title: Re: How long will Sticky Notes stay sticky?
Post by: HealthTeacher on 06/02/2017 16:39:24
Over time would the adhesive ever dry out.......releasing all the "stuff" stuck to it?  I know many things as mentioned stick to the sticky notes, but does the sticky note leave anything behind when it is stuck to things?  Ex. desk, wall
Title: Re: How long will Sticky Notes stay sticky?
Post by: chris on 06/02/2017 17:33:07
What actually is the adhesive used on post-it notes that has those quite special characteristics of being peelable and not too sticky?
Title: Re: How long will Sticky Notes stay sticky?
Post by: evan_au on 06/02/2017 20:29:07
Quote from: chris
What actually is the adhesive used on post-it notes
This has often been quoted as a discovery that "failed" in its intended application as an adhesive, but eventually created a niche of its own...