Vertical form, fill and seal packaging machine with incredible working possibilities represented by quality and reliability. The sealing system (electronic impulse) is structured in a cooling circuit by means of a pressure pump, radiator and liquid (anti-freeze liquid) for temperature thermal stabilization. This feauture grants long operating periods and a strong seal on any kind of plastic film (both one side or two sides sealing). The control of all operating functions by means of an “eprom” an easy symbols panel and an electro-protected contrl card. Machines TWIN may be supplied in the following version: With volumetric doser for medium size products. With electronic doser model for medium/big size products or small volume items. With doser for powders, and also line with independent electronic doser on top of the machine and “step-by-step” version.