Viscofan is a Spanish manufacturer of casings for meat products operating in over 100 countries around the world. It is a global producer with the capacity to manufacture the four main technologies available in the artificial casings market. Its production process is based on the physical and chemical treatment of the raw materials through mechanical or physical-chemical rupture, and later homogenization and mixes become a mass that can be extruded in the production process. The extrusion operation involves pressing the mass either through a ring to produce a tubular casing or through a slot to create products such as plastic film or collagen sheets. This process results in small casings that can be rolled onto spools or rolls and undergo a series of transformation processes, known as 'converting.' Notable processes include tripe pleating, and occasionally printing and closure, all of which facilitate storage and later distribution in the form of sticks for easy use in cold meat production machinery. The company has been trading in the Madrid Stock Exchange General Index since December 1986 and is a former component of the IBEX 35. Wikipedia