| 摘要 |
<p>Foamed cellular polymer particles having various physical properties made by use of foaming of the polymer containing a blowing agent. The foamed particles can be shipped in packages having less strenght than the packages used to ship the expandable particles and is more covenient for the user because there is no need for the party who receives them to have equipment to impregnate them with blowing agent and foam them.</p> |
