The implementation of this package is a real wound. It is impossible to introduce the roll after cutting to length, the bag in the machine's slot (AV 3840). The edges are wound on themselves, the contact is not made, as well as for welding to the suction, the lack of rigidity of the "plastic" makes it impossible to use the machine. From the same brand as the machine, I thought the quality of these packages was studied to highlight the impeccable quality for the time of this unit. The packages delivered with the machine were great, why the change? The packages "Brandt" even if they are not reliable on pre-welded sides however are better. What do you recommend? Thank you kindly take these comments into consideration and let me know your thoughts savvy professionals.