Need Help identifying this type of Binding?

This is the link to the binding; http://imgur.com/9t5viI4

Of what we have realized is that the pages are pasted against each other, allowing it to open more. However we do not know what the final glue binding thats done to hold it together so well.

Apparently in the UK or the US its called K-binding according to a creative agency, but upon a small research and calling random printers in both the US and the UK they hadn't heard about it.

Please any help would be appreciated. Thank you

link: http://imgur.com/9t5viI4

 

I think it might be Mohawk Panoramic Papers