AS 2281-1993 pdf free.Flexible Cellular Polyurethane For Seat Cushioning And Bedding. AS 2281 sets out requirements for flexible load-bearing cellular polyurethane, manufactured in block, flat or profiled sheet and strip form, in moulded and fabricated shapes, and as reconstituted material, for use in seat cushioning, bedding and similar applications. NOTES: 1.Appendix A provides a guide to the grade and thickness...