Continuous zip

Most probably it should be somewhere on the market, however, basic research had no exact result.

Traditional zip is made from metal (now from hard plastic) - the chess cell order with small common surface of two parts lead to common zip issues (jamming, uncontrolled unzipping).

The simple solution is to use with some adaptation reclosable bag slider zip like this




In my opinion it is not to hard to find the right elasticity proportion to make the flat like zipper in a jacket.

Most probably the switch mechanism should be longer than normal zip (due to narrow angel of the tube). Inside the C half of the shape there should be the guide (internal walls) opening the them to U or <  like shape for easier connection.