noun
loading material; filler
Technical term used in papermaking for materials added to the pulp to improve properties like opacity, smoothness, or printability.
填料として炭酸カルシウムがよく使われる。
Calcium carbonate is often used as a filler.
填料の種類によって紙の質感が変わる。
The texture of the paper changes depending on the type of filler.
A more general term for filler used in various industries (plastics, rubber, etc.), while 填料 is specifically for papermaking.
Compound of 填 (fill, stuff) and 料 (material). The exact historical derivation is uncertain, but the term is used in modern technical contexts for papermaking fillers.