| 摘要 |
<p>Foamed polyolefin sheet of specific wt. 40-100 kg/m3 used to wrap and protect vitreous items such as lavatory pans, sinks, wash basins, during travel. The foam may be wrap-round or preformed to a suitable shape for enclosing or lining the vitreous objects. Polyolefin foams are tougher and more flexible than foamed polystyrene, have greater compressive strength than polyurethane foam previously used, more effective than straw.</p> |
