Method of bundling bristles to be used in paint brushes, a paint brush head comprising a plurality of bristles and a paint brush comprising a plurality of bristles and/or a paint brush head

A method of bundling a plurality of monofilaments configured to be used in a paint brush comprising:

• gathering a predefined amount of monofilaments into a group of monofilaments so that the monofilaments are tangent to each other along their length,
• arranging a polymer insert in the bundle of monofilaments such that an end surface of the polymer insert and one ends of the monofilaments make up a flush end surface of monofilaments,
• fusing the one ends of the monofilaments-at the end surface together by means of a laser into a joined bundle of monofilaments;
• and
• fusing the one ends of the bundle of monofilaments to at least a part of the polymer insert.