Conventionally produced edible tubular casing is improved in its mechanical properties by being exposed to ultraviolet spectra in the range of 180 nm to 420 nm. The so treated casing is humidified, collapsed and wound onto a reel. The reel of tubular casing may be transported to a point of use ...http://www.google.es/patents/US5820812?utm_source=gb-gplus-sharePatente US5820812 - Process for strengthening collagen casings using ultraviolet irradiation
Process for strengthening collagen casings using ultraviolet irradiation