Extrusion and/or pultrusion device and method

An extrusion and/or pultrusion device for forming a profile product in a production direction, said device comprising:

• a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction there between, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions, and
• a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction and the width direction being perpendicular to the height direction, comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of a material when fed through the profile definition zone,
• wherein;
• the first channel section is circumferentially delimited by one or more walls
• and wherein
• the second channel section is circumferentially delimited by
• the circumferential surface of the rotating die and
• a channel portion comprising
• a counter-bearing opposite the rotating die and
• opposing first and second channel portion side walls between the rotating die and the counter-bearing
• wherein
• the width of the first channel section is, at least along a portion of its length and at least along a portion of its height, less than a distance between the two opposite side walls of the rotating die and wherein the first channel comprises, in in a longitudinal direction, a first width greater than a second width and a third width greater than the second width.