Inveregio, Italy – Saip has launched a powder recycling system. Repur is designed to help rigid board and flexible foamers to turn waste polyurethane into board products.
Saip introduces system to turn PU waste into board products
Commercial director Luca Ceresa said: ‘The system can help insulation boards and slabstock manufacturers to turn powders from processing into useful products.'
The first Repur line has been sold to a large rigid insulation producer. 'There is a lot of in-process scrap from rigid panel production,’ Ceresa said. ‘Parts are rebated and shaped. This generates waste that Repur can turn into useful products like moulds for 3D printing, flooring, pallets, kitchen tops and panels.’
The Repur powder recycling machine is designed to take powder, and mix it with a pre-polymer and a binder. It is then cured. 'Pozzi Arosio, Pozzi Industries systems house, can eventually supply custom formulations,' Ceresa said.
Typically, the plates are produced by compression moulding a slurry made of about 70% regrind, and 23% binder and 7% hardener. They can be up to 50mm thick, and so far Saip has made pieces 1.5m x 0.5m.
In addition to polyurethane waste, the system could use other fillers that are compatible with PU binder chemistry, Ceresa said.