Definitions for "B-Stage"
An intermediate stage in the reaction of a thermosetting resin in which the material softens when heated and swells when in contact with certain liquids but does not entirely fuse or dissolve. Materials are usually precured to this stage to facilitate handling and processing prior to final cure. (Sometimes referred to as resitol.)
Also referred to as "prepreg." Sii-cured stage of base printed wiring board substrate. B-stage material is used in lamination. During the lamination cycle, the B-stage is cured to C-stage.
This describes an intermediate stage of reaction where the material will soften when heated and swells in the presence of certain liquids, but may not completely fuse or dissolve. The resin is usually supplied in this uncured form.