I have atype content "informes"
How I can to create a separate page node for a specific type of content "informes"?
Unable to understand your exact requirement but let me answer what I got.
Create a panel page and give path to this page for that specific page you want to create for your content type. If you have already created that page using "/node/add/informes" then give its link to panel page. hope this is what you want.