ABSTRACT
The potential of recycling scrap has generated more interest recently and the need for a continuous in-line blending system has become apparent. The traditional method of adding fillers into the polyol stream would be to pre-blend the filler into a polyol holding tank and agitate until blended. This system has many drawbacks and does not give the best results due to saturation of a porous filler with a polyol resulting in a polyol rich filler.
The system offered by Edge-Sweets eliminates this problem by utilizing a continuous feed system which meters the filler into the polyol at the time it is to be used. Pre-blending and saturation of the filler with the polyol is eliminated. Due to the inherent design characterists of the equipment, the scrap ratio can be altered on-the-fly and in fact, blends of scrap can be implemented. The system was originally designed to incorporate powdered flame retardants, however it has been adapted to this new requirement and offers the slabstock producer and the molder a system which can be used as an in-line blender or as a final mixer, depending upon the process involved. The system can take advantage of finely ground powder as well as pelletized material in varying ratios up to 50% in some cases.
The poster session includes photographs of the equipment and samples of the product produced.
