In the UK, it's available at WH Smith.
Answer
Amazon have a wide range
Sticky Back Plastic is a soft and large colored plastic that is sticky on one side and can be purchased online at Homebase and Wall Paper and Borders homepages. Some stationary stores sell Sticky Back Plastic.
they take plastic and on the non-sticky side they glue on sticky-back-plastic
It is a low tack sticky back plastic! I think it's some type of plastic, that goes on your back!
Sellotape
you should be able to in most department stores
If you mean sticky back plastic for books, It's basically a flat, thin strip of plastic with a bit of glue on one of the sides (it can come it any shape, size and colour). Stick back plastic is mainly used for covering/wrapping books with it to make the book look neat and tidy. It comes wrapped around a pole-like thingy so it's easy to apply to a book. Sources: Knowledge.
Paper or plastic tape with an adhesive on it.
A paper or plastic 'carrier' coated with adhesive.
at the store like wal-mart and robbins store
The sticky note is stick because the people who make the sticky note make it sticky on the back so they will stick to stuff like desk, walls, ect...
Baby oil or patrolium jelly
Sticky gue