Compared to ''[[twist filler]]'' the substantial innovation introduced by [[Swan]] was to allow only a limited rotation of the bottom, marked with arrows, and avoids excessive stress applied to the rubber of the bag. The system however had a limited success and has been used only by this company, having in substance the same problems of fragility of its analogue and a rather reduced filling capacity.<noinclude> | Compared to ''[[twist filler]]'' the substantial innovation introduced by [[Swan]] was to allow only a limited rotation of the bottom, marked with arrows, and avoids excessive stress applied to the rubber of the bag. The system however had a limited success and has been used only by this company, having in substance the same problems of fragility of its analogue and a rather reduced filling capacity.<noinclude> |