The B2V (Back to Virgin) range takes clients in house "waste material" (edge trims, skeletal waste, mis-shapes, over-runs) and converts this back into pellets at the client specified IV and at pellet bulk density. This process can have a massive impact on client’s FPE as B2V material can be used as 100% replacement for virgin, though the client Processes will influence this.
Clients in process "waste" can be collected, size reduced for economic handling and brought to PETUK. This material can be homogenised through a vented extrusion process and 100% screened to identify/remove any contaminants. Extrusion conditions can be adjusted to accommodate some co-extruded products. Melt filtration removes any unmelts or gels
As with KUDOS manufacture the second stage; considered to be the most effective for decontaminating recycled PET, is Solid-State Polymerisation (SSP) within proprietary reactors. The reaction is controlled by the application of both temperature and applied vacuum to remove any volatilised material, and the bi-products from the condensation reaction, producing food use approved "super cleaned" polymer.
The final application resides with the client. B2V material can be used at 100%, maximising first pass efficiencies and reducing the client usage of virgin polymers, though blending is recommended for co-extruded materials. As a further benefit clients who have some lower IV "internal rework" can have their B2V processed at higher IV than their virgin polymers to facilitate virgin/rework/B2V blending to achieve uniform IV, where this is critical.
