The preforms are fed into a preform silo with an optional silo lid to protect the preforms from foreign objects. For sensitive products that have a higher hygiene requirement, the Feedmax system can be fully enclosed. From the silo, the preforms travel along an inclined conveyor to an interim conveyor that discharges into the preform sorter. At the end of the sorter, the preforms are fed in one lane to a discharge rail or, depending on the application, onto the active, horizontal Feedflow conveying segment.
The traditional discharge rail makes use of the force of gravity to generate the required accumulation pressure that keeps the preforms continuously moving towards the stretch blow moulder. The preform weight and quality, in-feed angle, surface properties of the discharge rail, temperature and humidity are all factors that influence reliable transportation and conveying speed. This complexity can pose a risk to the course of production and line availability.
As opposed to the traditional in-feed by discharge rail, the Feedflow method actively conveys the preforms along the horizontal feed segment in a targeted flow of air. The frequency controlled blower motors on the Feedflow ensure a constant and reliable flow of materials to the blow moulder. This also ensures a high permanent level of line availability.
Source: KHS
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