Resin set, drilled and stapled brushware also utilises drilled and stapled technology but additionally uses epoxy resin, which is poured around the bristle bundles to further secure the bristles.
Bristle fixation depends on:
- its position within the bristle bundle – the resin helps secure the outer bristles
- whether other bristles have already been dislodged
- the thickness of the bristles
The resin does not secure all of the bristles equally and those in the centre of the bristle bundle may not be secured by resin at all. Consequently, bristle retention is variable and, if a bristle from the centre of the bundle is dislodged, others in the bundle can become looser and easier to dislodge.
*Some products containing resin are not fully compliant with the EU regulations.