End face brush manufacturing – glue injection process for abrasive filament end brushes

After bristle tufting, two‑component epoxy resin is precisely dispensed into the root of abrasive filaments (SiC / alumina / diamond). Vacuum degassing is carried out before injection to eliminate bubbles. The resin wets the bristle roots evenly to lock filaments firmly. Controlled creeping glue can be applied for higher rigidity. Curing can be ambient or oven‑accelerated. This step directly determines anti‑pullout performance, shedding resistance and service life of deburring end brushes.