Cellophane Bags for Packaging Food Items

Hi peeps,
I need your assistance in getting cellophane bags (abi na nylon bags) with zipper-like seals just like the ones used in giving drugs in the clinic (only these will be larger sizes).

I want to use it in packaging food items.
I have asked around but not getting a positive response from people. :(

I don't know what name they are called, so if you know the name, abeg tell me.
Also, where I can purchase such (in Lagos metropolis)..

Your response is highly welcomed. ;)

Thanks.

Hi, i have been working on a similar product for a week now , but i have not been able to get good result. My is : how do i get a machine that make nylon T-shirt bag. i have seen it on the net from Asia country. If you have any clue, please inform me on this forum.