Verfahren zur Verkokung von grossen Kunststoffschaumkoerpern

摘要

Several bores are made in the body which is the heated to carbonizing temp. The evoled gases escape through the bores without rupturing the pores. Pref. the bores are made by piercing with steel needles, from 0.1-2.0 mm dia. Process is partic. suitable for foamed phenolic resins.