| abstract |
Polymeric beads made by a suspension or an emulsion processnmay be concurrently impregnated with blowing agent, an insecticide and anflame retardant, if required. The resulting bead is then washed and driednand then may be used for making a foam structure such as a sheet. Thenresulting foam sheet may be used in the construction industry, particularlynwhere there is a concern of insect infestation. |