| 摘要 |
Expanded, foamed plastic such as foamed plastic beads having a minimum density of 0.5 pounds per cubic foot and preferably of 0.4 pounds per cubic foot or less are fire extinguishing or retard the propagation of flames even though constructed of an otherwise flammable substance. The low density foamed material can be applied to exterior surfaces of objects, can be intermixed with flammable material or can be filled inside soft or hard shells to provide flame proofing. Flames can be retarded or extinguished by placing the low density foamed plastic material on burning objects.
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