Permanent rust protection for automobiles, etc. - using thermally expanded poly-styrene

摘要

Pre-expanded polystyrene pellets or powder are used to fill hollow parts of automobile bodies or similar prods and forced to expand while the automobile, etc., is heat treated Galvanic or corrosion processes in hollow parts are thus prevented the hollow parts of the automobiles are made more stiff and more deformation resistant, and vibration is stopped.