Bot­tle ma­chine with 24 cav­i­ties

DEMM Engineering & Manufacturing - - FOOD PROCESSING -

SIPA of Italy, a maker of PET stretch blow mould­ing ma­chines, has re­leased the third gen­er­a­tion SFR EVO ma­chine that is avail­able in ver­sions with 6, 8, 12 and 16 cav­i­ties with plans to re­lease 10, 20 and 24 cav­ity mod­els.

Fea­tures of the EVO3 in­clude new de­signs in the clamp unit and a max­i­mum out­put rate of 2250 bot­tles an hour per cav­ity.

A new com­pact blow­ing valve block has 35 per cent less dead air vol­ume and “green” ovens re­duce elec­tri­cal con­sump­tion by up to 40 per cent while keep­ing process con­di­tions sta­ble, due to the use of new lamps and spe­cial ma­te­ri­als and coat­ings for the re­flec­tors.

With elec­tric drives, there is no need for a stretch rod de­cel­er­a­tor and the stretch­ing cam, which fur­ther re­duce prod­uct change-over times. The elec­tric stretch­ing sys­tem on the SFR EVO3 also has a ‘smart’ self-learn­ing pro­ce­dure to iden­tify pre­form/bot­tle di­men­sions.

The ma­chines take ad­van­tage of me­chan­i­cal com­pen­sa­tion in the blow­ing process. In tra­di­tional pneu­matic com­pen­sa­tion, the to­tal stroke is made with high pres­sure blow­ing air, but in SIPA’s me­chan­i­cal sys­tem, high pres­sure blow­ing air is used only on the fi­nal frac­tion of a mil­lime­tre of the stroke. This leads to a sig­nif­i­cant re­duc­tion in air con­sump­tion, par­tic­u­larly with smaller bot­tles. Only a cav­ity change is needed to switch from pro­duc­tion of one type of container to an­other.­eren­quiry #D131215

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