Why would I use Roll laminating film instead of pouches?

Roll film is used on roll laminators usually for the larger items such as posters or for high volume items.

What laminating film should I be using?

Laminating film comes in a variety of sizes and thicknesses, for the size of the pouch you should try to choose a pouch that best fits the product your trying to laminate, for thickness you either choose a standard pouch 80 micron this will protect the document and enhance the colours or you choose a thicker pouch 125, 150 or even 250 micron for some more rigid for placemats or signs etc.