noun
filler; filling agent
Technical term for a substance added to plastics, rubber, or other materials to improve properties or reduce cost.
このプラスチックには充填剤として炭酸カルシウムが使われている。
Calcium carbonate is used as a filler in this plastic.
Standard kanji spelling.
Variant using the kyūjitai form of 填.
Compound of 充填 (filling) + 剤 (agent, preparation).