Processing of Integral-Skin Cellular Polymeric Composites in Rapid Rotational Foam Molding
R. Pop-Iliev
Faculty of Engineering and Applied Science, UOIT-University of Ontario Institute of Technology, Oshawa, Ontario, Canada L1H 7K4
Full Text PDF
In order to survive the competition, the processing cycle time and the energy consumption of the rotational foam molding process must be reduced to a fraction of its current levels without compromising product quality. This paper introduces a novel extrusion-assisted rotational foam molding process for the manufacture of rotational moldings having adjacent, but clearly distinct, layers of an integrated solid (non-cellular) skin boundary layer encapsulating a cellular core structure, consisting of identical or compatible polyolefin grades, that achieves significant savings in processing cycle time duration and energy consumption. It introduces non-chilled extruded foam as a foamed core-forming material, in real time, directly into a uni-axially rotating hot mold through a dedicated mold "injection" port onto the already formed un-foamed soft skin layer.
DOI: 10.12693/APhysPolA.120.292
PACS numbers: 47.32.Ef, 81.20.Hy, 82.70.Rr, 47.57.Bc, 83.80.Iz, 83.80.Sg,,, 81.05.Qk, 83.80.-k