The paper bag. While the Prince Edward Island Bag Company Limited has grown and changed over the years, the P.E.I. potato industry continues to be a key market. In the 1950s, paper potato bags became the package of choice for the consumer potato market. Five, ten, and twenty pound bags are the normal consumer package size. Fifty pound bags are used for institutional and commercial use. Product line. 2 & 3 ply, SOS-style Bag. Strong, biodegradable 2 & 3 ply SOS style bags (self-opening square). These bags have a flat bottom with formed sides (gussets) and a face and back. When the bag is empty and opened, it will stand erect without support. An example of this bag would be a paper grocery carryout bag, a paper potato bag or a cookie bag. Other Specifications. General Applications: Food products: potatoes, sugar, flour, household compost. Package Size Range: 5-50 pounds of product General Information: Packages are made to customer specifications and can be printed as required, to a maximum of four or five colors. Generic labels are available for customers without personal designs.