Leather panels are usually tanned to a natural brown color, which is usually required in professional leagues and collegiate play. At least one manufacturer uses leather that has been tanned to provide a "tacky" grip in dry or wet conditions. The leather is usually stamped with a pebble-grain texture to help players grip the ball. Some or all of the panels may be stamped with the manufacturer's name, league or conference logos, signatures, and other markings. Four panels or pieces of leather or plastic are required for each football. After a series of quality control inspections for weight and blemishes, workers begin the actual manufacturing process. Two of the panels are perforated along adjoining edges, so that they can be laced together. One of these lacing panels receives an additional perforation and reinforcements in its center, to hold the inflation valve. Each panel is attached to an interior lining. The four panels are then stitched together in an "inside-out" manner. The edges with the lacing holes, however, are not stitched together. The ball is then turned right side out by pushing the panels through the lacing hole. A polyurethane or rubber lining called a bladder is then inserted through the lacing hole. Polyvinyl chloride or leather laces are inserted through the perforations, to provide a grip for holding, hiking and passing the football. Before play, the ball is inflated to an air pressure of 12.5
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rubber iner tube sourounded by leather laced up with lw=eather straps Pigskin, air, leather, and rubber, sometimes string or rubber for laces. Actually the fooball is made out of leather made from cowhide and a plastic balloon to hold in the air.
Despite the nickname, footballs are made of leather, not pigskin. footballs are referred to as "pigskins" because early soccer (or maybe Rugby) balls were made from inflated pig bladders. Apparently, the name stuck, and everyone from pee-wee players to broadcasters now calls footballs pigskins.
At one time they were made from Pigskin, the term still use. all modern footballs are made from Cow-derived leather.
You might think NFL Footballs are made from pig skin, but actually they are made from premium cow hide. The reason they are called pigskins, dates back before football even started.