11. Also used as a stabilizer in the manufacture of polyurethane foam . 12. Typical materials used are cellulose foam, polyurethane foam , and less frequently, silicone foam. 13. Polyurethane foam was then used to create the different aircraft shapes and details.14. Close-cell polyurethane foam has been found to serve the purpose well. 15. In the 1950s, board makers discovered polyurethane foam and fiberglass technologies. 16. In 1960 more than 45, 000 metric tons of flexible polyurethane foams were produced. 17. Artificial pads are made from polyurethane foam and are less expensive than natural pads. 18. Polyurethane foams are now used in high-temperature oil filter applications.19. Polyurethane foam deteriorates over time which leaves a by-product that are sticky and acidic.20. Mr Poon said the bureau was looking into overseas legislation on polyurethane foam products.
