system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is sticky tape only sticky on 1 side despite the whole thing being rolled up?

Just one of those late-night insomnia deep thoughts. You'd expect some of the glue to get stuck on the non-sticky side and make both sides sticky, but somehow that doesnt happen?
gpt
After the tape is coated with adhesive, the adhesive is overlaid with  a thin coat of anti-stick material (such as polyvinyl carbamate) to keep it from sticking quite as hard to the next layer of tape in the roll.