SMLA Blow System
Special for Large-bottle Application
Overview
SMLA series is specially designed for extra large bottle production with volume between 5L to 10L, and the output is from 1200BPH to 2500BPH per unit. Patent-design pitch changeover system allows the preform holder’s pitch to be only 95mm inside the heating oven, which leads to 35% energy saving result at least comparing with other constant-pitch machine.
Specification
Platform SMLA2, with a production of up to 600 b/h/c, is available in 2 configurations: SMLA2-1200 (2 blow cavities) for the production of containers up to 5 liters and SMLA2-1200L (2 blow cavities) for containers up to 10 liters.


Platform SMLA4, with a production of up to 625 b/h/c, is available in 2 configurations: SMLA4-2500 (4 blow cavities) for the production of containers up to 5 liters and SMLA4-2500L (4 blow cavities) for containers up to 10 liters.


Technical Description
1、Preform Feeding
The preforms are feeding in bulk via belt elevator and linear unscrambler. The preforms are lowered by gravity, neck up, into the charging robot that feeds the machine. For each cycle, the preform loader places 2 preforms onto the conveyor belt at the same time.
2、Heating Conditioning
Preform enter the oven, neck down. Thanks to a very efficient oven cooling and cross ventilation system, necks and preform holders are protected against overheating while preform surface is perfectly cooled to avoid crystallization even for thick preforms and high production rates.
3、Pitch Distance Changeover
Upon leaving the heating conditioning, the preform will go into pitch distance changeover position. By slider&jaw, the abutting preform’s center distance will change from 50.8mm during heating to be the same as mold’s cavity pitch for blowing, which can ensure the machine to produce required bottle with possible short heating tunnels.
4、Stretch-Bowing
After center distance changeover, the preforms are introduced into the blowing mold. The longitudinal stretching of the preform is carried out by the stretching rod, whose stroke can be mechanical adjusted. Pre-blowing at medium pressure can be adjusted by means of manual valves that make it possible to synchronize it with the stretching. The high-pressure blowing is activated after the pre-blowing, with adjustable times.
5、Bottle Ejection
Once the bottles have been blown, they are transferred outside the blowing mold by means of a simple mechanical system. The bottles will be discharged onto a table top conveyor.