Hello,
I am considering closing a work area 4 m wide and 3m high with a flexible PVC/polyester sheet. I want to attach this sheet with a strong U-shaped zipper that curves at the top corners. Does anyone know of a particular type of zip that is able to curve while remaining attched. The curve will be on the flat side, that is why I am not sure it will work. What is the largest size of zipper that is available for industry? The strength is needed as there will be about 40 pascals of air pressure on the sheet. Thanks for any help.